JP6307056B2 - Particle therapy equipment - Google Patents

Description

The present invention relates to a particle beam therapy facility equipped with an irradiation device such as a rotating gantry for radiation therapy.

  A facility for irradiating a patient with accelerated particles such as a proton beam to treat cancer is known. This kind of equipment is a cyclotron that generates accelerating particles, a rotatable irradiation device (rotating gantry) that irradiates the patient with accelerating particles from any direction, and induction that guides the accelerating particles generated by the cyclotron to the irradiation device. Has a line. The rotating gantry includes a treatment table on which a patient lies, an irradiation unit that irradiates accelerated particles toward the patient, and an introduction line that introduces the accelerated particles guided by the guide line to the irradiation unit.

  The irradiation unit is configured to be rotatable with respect to the patient, and various modes are known for the form of the introduction line of the accelerated particles to the irradiation unit. For example, the introduction line (beam transport device 7) described in Patent Document 1 first has a connecting portion connected to the guide line on the rotation axis serving as the rotation center of the irradiation unit (irradiation device 8). It is curved in a substantially U shape on a plane passing through the rotation axis and is connected to the irradiation unit. In addition, the introduction line (delivery system 12) described in Patent Document 2 has a connecting portion connected to the induction line on the rotation axis, and is further curved so as to be twisted to the circumferential side of the rotation axis. It is linked to (nozzle32).

JP 2001-259058 A U.S. Pat. No. 4,917,344

  However, in conventional facilities, the irradiation device such as a rotating gantry and the cyclotron are generally arranged on the same floor (hierarchy), which leads to an increase in the size of the facility and requires a large site area. It was difficult to install in urban areas.

  The object of the present invention is to provide an accelerated particle irradiation facility capable of efficiently installing a particle accelerator and an irradiation device on a predetermined site.

The present invention is a particle beam treatment facility having an irradiation device for irradiating a patient with accelerated particles, a particle accelerator for generating accelerated particles, and a guide line for guiding the accelerated particles generated by the particle accelerator to the irradiation device And a building having a hierarchical structure of a plurality of floors, and the irradiation device is arranged in the rotation unit that can rotate around the rotation axis, the irradiation unit that irradiates acceleration particles, and a guide line And an introduction line that is connected to the irradiation unit and introduces the accelerated particles induced by the induction line to the irradiation unit, and the introduction line rotates from the start end connected to the induction line on the rotation axis. A radial introduction line that is bent 90 degrees with respect to the radial direction of the rotating part, one end is connected to the terminal part of the radial introduction line, and the other end is connected to the irradiation part Have been A circumferential introduction line extending between the one end and the other end curved in the circumferential direction of the rotating part, and the irradiation device having the introduction line is a particle accelerator in a building. The rotating part includes a first cylindrical part in which the irradiation part is disposed, a second cylindrical part having a smaller diameter than the first cylindrical part, and a first cylindrical part. A cone portion connecting the first cylindrical portion, a front ring installed on the outer peripheral portion of the front end of the first cylindrical portion, and a rear ring installed on the outer peripheral portion of the rear end of the first cylindrical portion. The irradiation device is disposed below the first cylindrical portion and rotatably supports the rotating portion, and is in contact with the outer peripheral surface of the front ring and applies a rotational force to the front ring. The device is disposed below the first cylindrical portion and rotatably supports the rotating portion, and is attached to the outside of the rear ring. A second roller device that abuts the surface and applies a rotational force to the rear ring, and the circumferential introduction line extends along the circumferential direction at a position spaced outward from the outer circumferential surface of the first cylindrical portion. The building has an irradiation device room in which an irradiation device is installed, and the irradiation device room has an entrance floor portion where the patient enters and exits, a low floor portion which is lower than the entrance floor portion, and The irradiation device is installed directly above the particle accelerator and in the low floor portion, and the irradiation device chamber has a first roller device and a second roller when viewed from a horizontal direction orthogonal to the rotation axis. in between the roller devices, it has a second low-floor portion that is lower than the low floor portion, particle accelerator, in plan view, has a substantially circular shape, characterized in that.

According to the present invention, since the particle accelerator and the irradiation device are respectively installed in different levels of the building, according to the site area, for example, the irradiation device is installed directly above the particle accelerator to reduce the occupied area of the site as much as possible. As a result, it becomes easy to efficiently install the particle accelerator and the irradiation device on a predetermined site .

  According to the present invention, a particle accelerator and an irradiation device can be efficiently installed on a predetermined site.

It is a sectional side view of the particle beam therapy equipment concerning a 1st embodiment of the present invention. It is a sectional side view which expands and shows a gantry chamber. It is a perspective view which shows the rotation gantry concerning this embodiment. It is a schematic sectional drawing which shows the state which fractured | ruptured the rotating gantry concerning this embodiment along the rotating shaft line. It is a layout view of particle beam therapy equipment showing the first floor portion of the building. It is a schematic sectional drawing which shows the state which fractured | ruptured the building along the VI-VI line of FIG. It is a schematic sectional drawing which shows the state which fractured | ruptured the building along the VII-VII line of FIG. It is an arrangement plan of particle beam therapy equipment showing the first basement part of the building. It is a sectional side view of the particle beam therapy equipment concerning a 2nd embodiment of the present invention. It is the sectional side view which looked at the particle beam treatment equipment concerning a 2nd embodiment from the direction along the axis of rotation of a rotating gantry. It is the sectional side view which looked at the particle beam therapy equipment which concerns on 2nd Embodiment from the direction orthogonal to the rotating shaft line of a rotating gantry. It is a sectional side view of the particle beam therapy equipment concerning a 3rd embodiment of the present invention. It is the sectional side view which looked at the particle beam treatment equipment concerning a 3rd embodiment from the direction along the axis of rotation of a rotating gantry. It is the sectional side view which looked at the particle beam treatment equipment concerning a 3rd embodiment from the direction which intersects perpendicularly with the axis of rotation of a rotating gantry. It is a sectional side view of the particle beam therapy equipment concerning a 4th embodiment of the present invention. It is sectional drawing which shows the state which fractured | ruptured the building along the XVI-XVI line of FIG. It is a sectional side view of the particle beam therapy equipment concerning a 5th embodiment of the present invention. It is a sectional side view of the particle beam therapy equipment concerning a 6th embodiment of the present invention. It is sectional drawing which shows the state which fractured | ruptured the building along the XIX-XIX line | wire of FIG. It is sectional drawing which shows the state which fractured | ruptured the building along the XX-XX line of FIG. It is a sectional side view of the particle beam therapy equipment concerning a 7th embodiment. It is sectional drawing which shows the state which fractured | ruptured the building along the XXII-XXII line | wire of FIG. It is sectional drawing which shows the state which fractured | ruptured the building along the XXIII-XXIII line | wire of FIG.

  Hereinafter, a preferred embodiment of an accelerated particle irradiation facility according to the present invention will be described with reference to the drawings. In the present embodiment, a case where the accelerated particle irradiation facility is a particle beam treatment facility will be described. The particle beam treatment facility is applied to, for example, cancer treatment, and is a device that irradiates a tumor (irradiation target) in a patient's body with a proton beam (accelerated particles).

  As shown in FIG. 1, a particle beam treatment facility 1A includes a cyclotron (particle accelerator) 2 that generates a proton beam, and a rotatable rotating gantry (irradiation device) 3 that irradiates a patient with a proton beam from an arbitrary direction. And a guide line 4 for guiding the proton beam generated by the cyclotron 2 to the rotating gantry 3. In addition, each device of the particle beam therapy facility 1A is installed in each room of a building (building) 6A having a hierarchical structure of a plurality of floors.

  The proton beam generated by the cyclotron 2 is guided to the rotating gantry 3 through the trajectory formed by the guide line 4. The induction line 4 is provided with a quadrupole electromagnet 41 (see FIG. 7) for converging the proton beam and a deflection electromagnet 42 for forming a predetermined trajectory.

  The cyclotron 2 includes a vacuum box 21 that accelerates ions therein, and an ion source 22 that supplies ions into the vacuum box 21. The vacuum box 21 communicates with the induction line 4.

  As shown in FIGS. 2 to 4, the rotating gantry 3 is disposed on the treatment table 31 (see FIG. 3) on which the patient lies, the rotating unit 30 provided so as to surround the treating table 31, and the rotating unit 30. An irradiation unit 32 for irradiating the patient on the treatment table 31 with a proton beam and an introduction line 33 for introducing the proton beam guided by the guide line 5 into the irradiation unit 32 are provided. The rotating gantry 3 is driven to rotate by a motor (not shown), and the rotation is stopped by a brake device (not shown). In the following description, the front surface of the rotating gantry 3 means the side surface on the side where the rotating unit 30 is opened so that the treatment table 31 is installed and the patient can enter and exit, and the back surface means It means the back side.

  The rotating part 30 is rotatable and includes a first cylindrical part 34, a cone part 35, and a second cylindrical part 36 in order from the front side. The 1st cylindrical part 34, the cone part 35, and the 2nd cylindrical part 36 are arrange | positioned coaxially, and are mutually fixed. The irradiation unit 32 is disposed on the inner surface of the first cylindrical portion 34 and is directed in the axial direction of the first cylindrical portion 34. A treatment table 31 is disposed in the vicinity of the axis (rotation axis) P of the first cylindrical portion 34. The second cylindrical portion 36 has a smaller diameter than the first cylindrical portion 34, and the cone portion 35 is formed in a conical shape so as to connect the first cylindrical portion 34 and the second cylindrical portion 36.

  A front ring 39 a is installed on the outer peripheral portion of the front end of the first cylindrical portion 34, and a rear ring 39 b is installed on the outer peripheral portion of the rear end of the first cylindrical portion 34. The first cylindrical portion 34 is rotatably supported by a roller device 40 (see FIG. 2) disposed below the first cylindrical portion 34. The outer peripheral surfaces of the front ring 39 a and the rear ring 39 b are in contact with the roller device 40, and a rotational force is applied by the roller device 40.

  The introduction line 33 is connected to the guide line 4 on the back side of the rotating gantry 3. The introduction line 33 includes two sets of 45 degree deflection electromagnets and two sets of 135 degree deflection electromagnets. The introduction line 33 has a radial introduction line 33a extending in the radial direction in communication with the guide line 4, and a circumferential introduction line 33b extending in the circumferential direction, following the radial introduction line 33a. . The introduction line 33 is provided with a beam transport tube (not shown) along the trajectory of the proton beam.

  The radial direction introduction line 33a is bent 90 degrees (45 degrees × 2 times) with respect to the rotation axis P from the starting end portion connected to the guide line 4 on the rotation axis P in the second cylindrical portion 36 and extends in the radial direction. The end portion is a path portion that protrudes outside the first cylindrical portion 34. In addition, the circumferential introduction line 33b extends from the start end communicating with the terminal end of the radial introduction line 33a by bending 135 degrees in the circumferential direction of the rotating unit 30, and further 135 degrees toward the inside in the radial direction. It is a path portion that is curved and the end portion communicates with the irradiation unit 32.

  The circumferential introduction line 33 b is disposed along the circumferential direction at a position spaced outward from the outer circumferential surface of the first cylindrical portion 34, and is supported by the gantry 37. The gantry 37 is formed so as to project outward from the outer peripheral surface of the first cylindrical portion 34 in the radial direction.

  The counterweight 38 is disposed opposite to the circumferential introduction line 33 b and the gantry 37 with the rotation axis P interposed therebetween. The counterweight 38 is fixed to the outer peripheral surface of the first cylindrical portion 34 and is installed so as to project outward in the radial direction. By installing the counterweight 38, a weight balance between the introduction line 33 and the gantry 37 is ensured. Further, if the length from the rotation axis P to the outer edge of the counterweight 38 is shorter than the length from the rotation axis P to the outer edge of the introduction line 33, the building 6A can be downsized.

Moreover, the rotating gantry 3 of this embodiment, the front and rear along the rotation axis P direction of the length L ₁ is formed in a short thin than the maximum outer diameter of the rotating portion 30 (maximum width). The longitudinal length L _1, for example, from the front end of the first cylindrical portion 34, until the rear end of the second cylindrical portion 36 is a length L _1. The maximum outer diameter of the rotating portion 30 is the maximum outer diameter in the direction orthogonal to the rotation axis P, and corresponds to the length r ₁ from the rotation axis P to the outer edge of the circumferential introduction line 33b (maximum outer diameter = Radius r ₁ × 2). Note that the portion corresponding to the length from the rotation axis P to the outer edge of the counterweight 38 may have a maximum outer diameter.

  The guide line 4 (see FIGS. 1 and 7) includes a beam transport tube (not shown) through which the proton beam passes, a plurality of quadrupole electromagnets 41 for converging the proton beam and adjusting the shape of the proton beam, and a curved trajectory of the proton beam. A plurality of bending electromagnets 42 and the like arranged for forming are provided.

  Next, with reference to FIG. 1 and FIGS. 5 to 8, the arrangement of each device of the building 6 </ b> A and the particle beam therapy facility 1 </ b> A in the building 6 </ b> A will be described. The building 6A is, for example, a reinforced concrete structure or a steel concrete structure, and each room is partitioned by a radiation shielding wall made of concrete. The building 6A includes a main building (building) 61 in which the cyclotron 2, the rotating gantry 3 and the guide line 4 constituting the main part of the particle beam treatment facility 1A are installed, and power supply facilities and other facilities. And a sub-building 62 provided with a room and a room for receiving a patient. The sub-building 62 has a hierarchical structure of the third basement floor and the first floor above the ground. The third basement part is provided with a cooling device room R3, and the second basement part is provided with a power supply room R4. In addition, the radioactive material storage R5 and the staff room R6 are provided on the first basement floor, and the treatment operation room R7, reception R8, locker room R9, toilet R10, patient waiting room R11, A passage R12 and the like for entering the gantry chamber R2 are provided.

  The main building 61 has a hierarchical structure of the first basement floor and the first floor above the ground. The cyclotron room (accelerator room) R1 provided on the first basement floor (lowermost layer) is provided with a cyclotron 2, A rotating gantry 3 is provided in a gantry chamber (irradiation device chamber) R2 provided on the floor portion directly above the cyclotron chamber R1. The main building 61 is provided with a communication passage 9 in which a guide line 4 for connecting the cyclotron 2 and the rotating gantry 3 is disposed.

  The cyclotron chamber R1 has a substantially rectangular shape in plan view and is surrounded by a (radiation) shielding wall 71 (see FIG. 8). The cyclotron 2 is arranged on the front side (the upper side shown in FIG. 8) of the cyclotron chamber R1, and the proton beam generated by the cyclotron 2 is led out from the back side of the cyclotron 2. A communication passage 9 formed along the vertical direction is connected to the back side of the cyclotron chamber R1. The communication passage 9 extends along the vertical direction (vertical direction) and communicates with the back side (the lower side shown in FIG. 5) of the gantry chamber R2.

  The guide line 4 (see FIG. 7) communicates with the vacuum box 21 of the cyclotron 2 and extends in the horizontal direction, and bends approximately 90 degrees vertically upward to pass through the communication passage 9 and again in the horizontal direction. Curved approximately 90 degrees toward the rotating gantry 3. A plurality of quadrupole electromagnets 41 are arranged on the straight line portion of the induction line 4, and two sets of deflection electromagnets 42 that change the path by a rotation angle of 45 degrees are arranged on the curved portion, so that the bending is approximately 90 degrees. Is realized. Further, the guide line 4 is arranged on a virtual plane PL that is two-dimensional, that is, extends in the vertical direction (vertical direction). As a result, the number of quadrupole electromagnets 41 and deflection electromagnets 42 for converging and curving the proton beam guided by the guide line 4 can be reduced.

  The gantry chamber R2 is provided directly above the cyclotron chamber R1. The gantry chamber R <b> 2 is formed in a substantially rectangular shape in plan view and is partitioned by a radiation shielding wall 81. The gantry chamber R2 is provided with an entrance floor 87a through which a patient enters and exits and a low floor 87c that is one step lower than the entrance floor 87a. The rotating gantry 3 is installed on the low floor portion 87c with the treatment table 31 facing the entrance floor portion 87a, so that the patient can easily reach the treatment table 31. Further, a wall on the inlet floor portion 87a side of the gantry chamber R2 is formed with an entrance that communicates with the path R12 having a labyrinth structure.

  The rotating gantry 3 is arranged so that the portion having the maximum width is along the maximum width of the installation space of the rotating gantry 3 in the gantry chamber R2. Specifically, the rotating gantry 3 is arranged along the diagonal line of the substantially rectangular gantry chamber R2, and a device for efficiently using the space in the gantry chamber R2 is provided.

  As shown in FIGS. 1, 2, 6, and 7, the ceiling 86 of the main building portion 61 avoids interference with the rotating portion 30 of the rotating gantry 3 and serves as an entrance for carrying in components. 92 is formed. The opening 92 is covered from the outside of the gantry chamber R <b> 2 (main building portion 61) by a shield member 93 made of a material different from the ceiling 86. The shield member 93 is formed, for example, by laminating a plurality of lead shielding plates 93a. Note that a concrete shielding plate made of the same material as the ceiling 86 may be laminated as the shield member 93. For example, it is good also as a shield member which is not a plate shape but a block body.

  The shield member 93 may be made of heavy concrete as another material. The shield member 93 made of heavy concrete is expensive compared to the shield member 93 made of ordinary concrete, but has high radiation shielding properties. For example, when a shield member made of heavy concrete is used, the thickness can be about 2/3 as compared with a case where a shield member made of ordinary concrete is used. Moreover, construction can be facilitated by using a shield member 93 that is modularized as a plate-like component.

  In the particle beam therapy facility 1A according to the present embodiment, the cyclotron 2 and the rotating gantry 3 are respectively installed in different levels of the building 6A, and in particular, the rotating gantry 3 is installed immediately above the cyclotron 2. The site occupation area can be reduced as much as possible according to the site area, and as a result, the cyclotron 2 and the rotating gantry 3 can be efficiently installed on a predetermined site.

  In this embodiment, only one rotating gantry 3 is installed on the ground floor, but the cyclotron 2 is installed in the lowest layer of the building 6A even when the rotating gantry 3 is added. Therefore, it is not necessary to move the cyclotron 2, and the second floor or the third floor is provided above the first floor portion where the rotating gantry 3 is already installed, and the rotating gantry 3 is appropriately installed on the upper level. Since it can be installed, it is easy to add a rotating gantry 3. In anticipation of future expansion, for example, the cyclotron room R1 is provided on the third basement floor, the gantry room R2 is provided on the second basement floor, while the first basement is left open. If a new gantry chamber R2 is provided in the part and the rotating gantry 3 is installed, the burden of carrying in and installing the rotating gantry 3 which is a heavy object is reduced.

Moreover, the irradiation apparatus according to the present embodiment can irradiate the rotating unit 30 that can rotate around the rotation axis P and the proton beam generated by the cyclotron 2 toward the irradiation target, and can rotate the rotating unit 30. A rotating gantry 3 having an irradiation unit 32 whose irradiation direction changes accordingly. The rotating gantry 3 is thin and has a length shorter in the direction of the rotational axis P than the maximum outer diameter (maximum width) in the direction orthogonal to the rotational axis P, and is therefore effective for downsizing the facility. It is easy to efficiently install the cyclotron 2 and the rotating gantry 3 on the site.
(Second Embodiment)

  Next, a particle beam therapy facility (accelerated particle irradiation facility) 1B according to a second embodiment of the present invention will be described with reference to FIGS. In addition, regarding the particle beam therapy facility 1B according to the present embodiment, elements and members similar to those of the particle beam therapy facility 1A according to the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  The building 6B according to the present embodiment is, for example, a reinforced concrete structure or a steel concrete structure, and each room is partitioned by a radiation shielding wall made of concrete. The building 6B includes a main building part (building) 63 and a sub building part 64. The sub-building part 64 has a hierarchical structure of the third basement floor and the fourth floor above the ground. Each floor is provided with a cooling device room R3, a power supply room R4, a staff room R6, a radioactive material storage room R5, a treatment operation room R7, and the like. ing.

  The main building 63 has a hierarchical structure of the first basement and the second floor above the ground. The cyclotron (particle accelerator) 2 is installed in the cyclotron room (accelerator room) R1 provided in the first basement part (lowermost layer). The first gantry chamber R13 provided on the first floor above the cyclotron chamber R1 is provided with a first rotating gantry 7, and on the second floor above the first gantry chamber R13. A second rotating gantry 8 is provided in the provided second gantry chamber R14. Further, the main building portion 63 is provided with a communication passage 11 in which a guide line 10 for connecting the cyclotron 2 to the first rotating gantry 7 and the second rotating gantry 8 is arranged. The first rotating gantry 7 and the second rotating gantry 8 have substantially the same configuration as the rotating gantry 3 according to the first embodiment, and thus detailed description thereof is omitted.

  The guide line 10 communicates with the vacuum box 21 of the cyclotron 2 and extends in the horizontal direction, and is bent from the extraction path 10a and an extraction path 10a passing through the connection path 11 by being bent approximately 90 degrees vertically upward. A first branch path 10b that is curved approximately 90 degrees in the horizontal direction with respect to the take-out path 10a and communicates with the first rotating gantry 7, and branches from the take-out path 10a to the take-out path 10a. And a second branch path 10c that is curved approximately 90 degrees in the horizontal direction and communicates with the second rotating gantry 8.

  A plurality of quadrupole electromagnets 41 are arranged in the straight portion of the induction line 10, and two sets of deflection electromagnets 42 that change the path by a rotation angle of 45 degrees are arranged in the curved portion, and the bending is approximately 90 degrees in total. Is realized. The take-out path 10a, the first branch path 10b, and the second branch path 10c of the guide line 10 are two-dimensional, that is, a virtual plane PL extending along the vertical direction (vertical direction) (see FIG. 10). Is placed on top. As a result, the number of quadrupole electromagnets 41 and deflecting electromagnets 42 for converging and curving the proton beam guided by the guide line 10 can be reduced.

  Here, the symmetry of the trajectory of the proton beam is easy to maintain if it is two-dimensionally on the same virtual plane PL, but is difficult to adjust if it is shifted three-dimensionally. In the particle beam therapy facility 1B according to the present embodiment, since the extraction path 10a of the guide line 10 and the plurality of branch paths 10b and 10c are on the same virtual plane PL, it is easy to maintain the symmetry of the trajectory of the proton beam. Therefore, it is effective for improving the irradiation accuracy.

  According to the particle beam therapy facility 1B according to the present embodiment, the cyclotron 2, the first rotary gantry 7 and the second rotary gantry 8 are placed on a predetermined site, similarly to the particle beam therapy facility 1A according to the first embodiment. And can be installed efficiently. Moreover, since the cyclotron 2 is installed in the lowermost layer of the building 6B, the rotation gantry 7 and 8 can be easily added.

Furthermore, the particle beam therapy facility 1 </ b> B includes a plurality of rotating gantry 7 and 8, and the plurality of rotating gantry 7 and 8 are respectively installed in different levels of the main building portion 63. Therefore, since it becomes possible to install the plurality of rotating gantry 7, 8 so as to be arranged in the vertical direction according to the site area, it becomes easy to efficiently install the plurality of rotating gantry 7, 8 on a predetermined site.
(Third embodiment)

  Next, a particle beam therapy facility (accelerated particle irradiation facility) 1C according to a third embodiment of the present invention will be described with reference to FIGS. In addition, regarding the particle beam therapy facility 1C according to the present embodiment, the same reference numerals are used for the same elements and members as the particle beam therapy facility 1A according to the first embodiment or the particle beam therapy facility 1B according to the second embodiment. The detailed description is omitted.

  The building 6C according to the present embodiment is, for example, a reinforced concrete structure or a steel concrete structure, and each room is partitioned by a radiation shielding wall made of concrete. The building 6 </ b> C includes a main building portion 65 and a sub building portion 64.

  The main building portion 65 has a hierarchical structure of the first basement floor and the second floor above the ground, and a cyclotron (particle accelerator) 2 is installed in the cyclotron room (accelerator room) R1 provided in the first basement part (lowermost layer). The rotating gantry 3 is provided in the gantry chamber R15 provided immediately above the cyclotron chamber R1 in the first floor portion, and the fixed irradiation chamber R16 provided immediately above the gantry chamber R15 in the second floor portion. A fixed irradiation device 12 is provided. The main building portion 65 is provided with a communication passage 11 in which a guide line 10 for connecting the cyclotron 2, the rotating gantry 3, and the fixed irradiation device 12 is disposed.

  The fixed irradiation apparatus 12 includes a treatment table 12b on which a patient sits, an irradiation unit 12a that irradiates the patient on the treatment table 12b with a proton beam, and an introduction line that introduces the proton beam guided by the guide line 10 into the irradiation unit 12a. 12c. Unlike the rotating gantry 3 described above, the fixed irradiation device 12 does not include the rotating unit 30. The irradiation unit 12a is fixed at a predetermined position, and irradiation of the proton beam to a specific part of the patient is adjusted by the vertical movement or rotation of the treatment table 12b. The fixed irradiation device 12 is used for treating diseases of the prostate and the eyeball.

  In the particle beam therapy facility 1C according to the present embodiment, the cyclotron 2, the rotating gantry 3, and the fixed irradiation device 12 are respectively installed in different levels of the building 6C, and in particular, the rotating gantry directly above or above the cyclotron 2. 3 or the fixed irradiation device 12 is installed, it is possible to reduce the area occupied by the site as much as possible according to the site area. As a result, the cyclotron 2, the rotating gantry 3 and the fixed irradiation device are installed on a predetermined site. 12 can be efficiently installed. Moreover, since the cyclotron 2 is installed in the lowermost layer of the building 6C, the rotation gantry 3 can be easily added.

  The take-out path 10a, the first branch path 10b, and the second branch path 10c of the guide line 10 are two-dimensionally arranged on a virtual plane PL extending in the vertical direction (vertical direction). Yes. As a result, the number of quadrupole electromagnets 41 and deflecting electromagnets 42 for converging and curving the proton beam guided by the guide line 10 can be reduced. Furthermore, since the extraction path 10a and the plurality of branch paths 10b and 10c are on the same virtual plane PL, it becomes easy to maintain the symmetry of the trajectory of the proton beam, which is effective in improving the irradiation accuracy.

  Furthermore, the particle beam treatment facility 1C includes two types of irradiation devices, that is, the rotating gantry 3 and the fixed irradiation device 12, and the rotating gantry 3 and the fixed irradiation device 12 are installed in different levels of the main building 65, respectively. Has been. Accordingly, since the rotating gantry 3 and the fixed irradiation device 12 can be installed so as to be lined up and down according to the site area, different types of the rotating gantry 3 and the fixed irradiation device 12 are arranged on a predetermined site. And can be installed efficiently.

Furthermore, since the particle beam treatment facility 1C includes the rotating gantry 3 that is a rotating irradiation device and the fixed irradiation device 12 that includes the irradiation unit 10a in which the irradiation direction is fixed, the rotating gantry 3 and the fixed irradiation device 12 are included. It is effective for appropriate irradiation of the proton beam to the patient.
(Fourth embodiment)

  Next, a particle beam therapy facility (accelerated particle irradiation facility) 1D according to a fourth embodiment of the present invention will be described with reference to FIGS. 15 and 16. In addition, regarding the particle beam therapy facility 1D according to the present embodiment, the same elements and members as those of the particle beam therapy facilities 1A to 1C according to the first to third embodiments are denoted by the same reference numerals and are described in detail. Is omitted.

  The building 6D according to the present embodiment is, for example, a reinforced concrete structure or a steel concrete structure, and each room is partitioned by a radiation shielding wall made of concrete. The main structure of the building 6D is a hierarchical structure of the first basement floor and the second floor above the ground. A cyclotron (particle accelerator) 2 is provided in the cyclotron chamber (accelerator room) R1 provided in the first basement part (lowermost layer). is set up. A first gantry chamber R17 is provided on the first floor above the cyclotron chamber R1, and a first rotating gantry 7 is installed in the first gantry chamber R17. Further, a second gantry chamber R18 is provided at a position shifted in the horizontal direction with respect to the first gantry chamber R17 on the second floor above the first gantry chamber R17, and the second gantry chamber R18 includes a second gantry chamber R18. Rotating gantry 8 is provided.

  The building 6 </ b> D is provided with a communication passage 14 in which a guide line 13 for connecting the cyclotron 2 to the first rotating gantry 7 and the second rotating gantry 8 is disposed. The communication passage (see FIG. 16) 14 is provided in the approximate center of the building 6D. The guide line 13 communicates with the vacuum box 21 of the cyclotron 2 and extends in the horizontal direction. The guide line 13 is bent from the extraction path 13a and an extraction path 13a passing through the communication path 14 by being bent approximately 90 degrees vertically upward. A first branch path 13b that is curved approximately 90 degrees in the horizontal direction with respect to the take-out path 13a and communicates with the first rotating gantry 7, and branches from the take-out path 13a. And a second branch path 13c that is curved approximately 90 degrees in the horizontal direction and communicates with the second rotating gantry 8. In the particle beam therapy facility 1D according to the present embodiment, the virtual vertical plane Pa passing through the rotation axis P of the first rotating gantry 7 and the virtual vertical plane Pb passing through the rotating axis P of the second rotating gantry are the same. Therefore, the first branch path 13b and the second branch path 13c are not arranged on the same virtual plane.

  In the particle beam therapy facility 1D, the cyclotron 2, the first rotating gantry 7, and the second rotating gantry 8 are installed in different levels of the building 6D, respectively, and the occupied area of the site is reduced as much as possible according to the site area. As a result, it becomes easy to efficiently install the cyclotron 2 and the rotating gantry 7, 8 on a predetermined site. Moreover, since the cyclotron 2 is installed in the lowermost layer of the building 6D, it is easy to add the rotating gantry 7, 8.

  Furthermore, in the particle beam treatment facility 1D, the first rotating gantry 7 and the second rotating gantry 8 are staggered so as to be displaced in the horizontal direction. The 2nd rotation gantry 8 can be installed avoiding the part which becomes, and it becomes easy to compress the height of building 6D.

In the particle beam treatment facility 1D, the first rotating gantry 7 is arranged right above the cyclotron 2, but the first rotating gantry 7 is arranged horizontally shifted from right above the cyclotron 2, A staggered arrangement in which the two rotating gantry 8 is arranged vertically above the cyclotron 2 may be used. Alternatively, a staggered arrangement in which both the rotating gantry 7 and 8 are alternately shifted left and right with respect to a vertical line passing through the center of the cyclotron 2 may be used.
(Fifth embodiment)

  Next, a particle beam therapy facility (accelerated particle irradiation facility) 1E according to a fifth embodiment of the present invention will be described with reference to FIG. In addition, regarding the particle beam treatment facility 1E according to the present embodiment, the same elements and members as those of the particle beam treatment facilities 1A to 1D according to the first to fourth embodiments are denoted by the same reference numerals and detailed description is given. Omitted.

  The building 6E according to the present embodiment is, for example, a reinforced concrete structure or a steel concrete structure, and each room is partitioned by a radiation shielding wall made of concrete. Moreover, the building 6E has a hierarchical structure of the first basement and the second floor. In the particle beam therapy facility 1E according to the present embodiment, the upper and lower arrangements of the first rotating gantry 7, the second rotating gantry 8, and the cyclotron 2 are reversed as compared with the above-described embodiments. A cyclotron chamber (accelerator chamber) R19 in which a cyclotron (particle accelerator) 2 is installed is provided in the second floor portion (top layer) of 6E, and a first rotating gantry 7 is installed in the first floor portion. A first gantry chamber R20 is provided, and a second gantry chamber R21 in which the second rotating gantry 8 is installed is provided in the first basement (lowermost layer).

In the particle beam therapy facility 1E according to the present embodiment, the cyclotron 2, the first rotating gantry 7, and the second rotating gantry 8 are installed in different levels of the building 6E, and the site occupies according to the site area. The area can be reduced as much as possible, and as a result, the cyclotron 2, the first rotating gantry 7 and the second rotating gantry 8 can be efficiently installed on a predetermined site.
(Sixth embodiment)

  Next, a particle beam therapy facility (accelerated particle irradiation facility) 1F according to a sixth embodiment of the present invention will be described with reference to FIGS. In addition, regarding the particle beam therapy facility 1F according to the present embodiment, the same elements and members as those of the particle beam therapy facilities 1A to 1E according to the first to fifth embodiments are denoted by the same reference numerals and are described in detail. Is omitted.

  The building 6F according to the present embodiment is, for example, a reinforced concrete structure or a steel concrete structure, and each room is partitioned by a radiation shielding wall made of concrete. In addition, the building 6 </ b> F includes a main building portion 66 and a sub building portion 67. The sub-building 67 has a hierarchical structure of three underground floors and one floor above the ground, and each floor is provided with a cooling device room R3, a power supply room R4, a staff room R5, a radioactive material storage room R6, a treatment operation room R7, and the like. ing.

  The main building 66 has a hierarchical structure of the first basement and the first floor, and the cyclotron (accelerator room) R22 provided on the first basement (lowermost layer) is provided with the cyclotron (particle accelerator) 2. Yes. A first gantry chamber R23 and a second gantry chamber R24 are provided side by side on the first floor portion, and the first gantry chamber R23 is provided with a first rotating gantry 7, and a second gantry chamber R23 is provided. A second rotating gantry 8 is provided in the gantry chamber R24.

  The first gantry chamber R23 and the second gantry chamber R24 are adjacent to each other with the radiation shielding wall 71 interposed therebetween. The first gantry chamber R23 is formed in a substantially rectangular shape, and a passage R12 having a labyrinth structure is formed on the front side, and communicates with a space provided with a reception, a patient waiting room, and the like. The first rotating gantry 7 is disposed along the diagonal line of the first rectangular gantry chamber R23 having a substantially rectangular shape with the front side facing the passage. The second gantry chamber R24 and the second rotating gantry 8 have a symmetric structure with respect to the first gantry chamber R23 and the first rotating gantry 7 with the radiation shielding wall 71 interposed therebetween.

  On the back side of the first rotating gantry 7 and the second rotating gantry 8, a communication passage 17 is formed through which a guide line 16 that forms a trajectory of the proton beam passes. The guide line 16 communicates with the vacuum box 21 of the cyclotron 2 and extends in the horizontal direction, is curved approximately 90 degrees vertically upward, passes through the communication passage 17, and is directed horizontally in the first floor portion above the ground. And a first branch path 16b and a second branch path 16b that branch in two directions from the extraction path 16a and communicate with the first rotary gantry 7 and the second rotary gantry 8, respectively. Branch path 16c.

  The first branch path 16b is arranged on a horizontal plane and connected to the first rotating gantry 7. By arranging the plurality of quadrupole electromagnets 41 and the deflecting electromagnets 42, the proton beam is converged and a predetermined curved orbit is formed. Is planned. The second branch path 16 c is disposed on the same horizontal plane as the first branch path 16 b and is connected to the second rotating gantry 8.

  The second branch path 16c is branched from the take-out path 16a and branched from the first branch path 16b, and is detoured so as to be farther from the second rotating gantry 8 than the first branch path 16b. It has a detour intersection 16e that intersects the first branch path 16b, and a connection portion 16f connected from the detour intersection 16e to the second rotating gantry 8.

  In order to form a predetermined trajectory for appropriately introducing the proton beam from the extraction path 16a into the second rotating gantry 8, a certain distance (path length) is required as the second branch path 16c. In the particle beam therapy facility 1 according to the present embodiment, the second branch gantry 7 is not separated from the second rotary gantry 8 in order to secure the path length of the second branch path 16c, but the second branch gantry 8 is not separated. By providing the detour intersection 16e in the path 16c, the path length of the second branch path 16c can be easily secured, and moreover, the second branch path 16c and the first branch path 16b can be crossed compactly. Therefore, it is possible to arrange the first rotating gantry 7 and the second rotating gantry 8 as close as possible. As a result, it becomes easy to efficiently arrange the first rotating gantry 7 and the second rotating gantry 8 in a predetermined site area.

  In the particle beam therapy facility 1F according to the present embodiment, the cyclotron 2, the first rotating gantry 7 and the second rotating gantry 8 are respectively installed in different levels of the building 6F, and the site is occupied according to the site area. It is possible to reduce the area as much as possible, and as a result, it becomes easy to efficiently install the cyclotron 2 and the rotating gantry 7, 8 on a predetermined site. Furthermore, since the cyclotron 2 is installed in the lowermost layer of the building 6F, it is easy to add irradiation devices such as the rotating gantry 7, 8.

  Moreover, in this embodiment, since the several rotation gantry 7 and 8 is installed in the same hierarchy, ie, the ground first floor part, it is effective when the height of the building 6F cannot be taken very high.

  Further, the second branch path 16c of the guide line 16 has a detour intersection 16e that detours away from the second rotating gantry 8 and intersects the first branch path 16b more than the first branch path 16b. Therefore, it is easy to realize a configuration that can be easily connected to the second rotating gantry 8 adjacent to the first rotating gantry 7 while increasing the path length of the second branch path 16c.

By adopting the configuration of the first branch path 16b and the second branch path 16c of the guide line 16, the cyclotron (particle accelerator) and the plurality of irradiation devices are all installed in the same level of the building. Even in this mode, the cyclotron and the plurality of irradiation devices can be efficiently installed on a predetermined site. For example, the first branch path 16b and the second branch path 16c branched from the extraction path 16a connected to the vacuum box 21 of the cyclotron 2 are arranged in the same hierarchy, and the first branch path 16b is the first branch path 16b. The second branch path 16 c is connected to the rotating gantry 7 and connected to the second rotating gantry 8. In this case, since the second branch path 16c has the detour intersection 16e, it is easy to secure the path length of the second branch path 16c. Further, the second branch path 16c and the first branch path 16b are different from each other. Since it intersects, it can be easily made compact.
(Seventh embodiment)

  Next, a particle beam therapy facility (accelerated particle irradiation facility) 1G according to a seventh embodiment of the present invention will be described with reference to FIGS. In addition, regarding the particle beam therapy facility 1G according to the present embodiment, elements and members similar to those of the particle beam therapy facilities 1A to 1F according to the first to sixth embodiments are denoted by the same reference numerals and are described in detail. Is omitted.

  The building 6G according to the present embodiment is, for example, a reinforced concrete structure or a steel concrete structure, and each room is partitioned by a radiation shielding wall made of concrete. The building 6G includes a main building portion 68 and a sub-building portion 69. The sub-building 69 has a hierarchical structure of three underground floors and one floor above the ground. Each floor is provided with a cooling device room R3, a power supply room R4, a staff room R5, a radioactive material storage room R6, a treatment operation room R7, and the like. ing.

  The main building 68 has a hierarchical structure of the first basement and the first floor, and the cyclotron (particle accelerator) 2 is installed in a cyclotron room (accelerator room) R25 provided in the first basement part (lowermost layer). Yes. On the first floor, a gantry chamber R26 and a fixed irradiation chamber R27 are provided side by side, the rotating gantry 3 is provided in the gantry chamber R26, and the fixed irradiation device 12 is provided in the fixed irradiation chamber R27. ing.

  The gantry chamber R26 and the fixed irradiation chamber R27 are adjacent to each other with the radiation shielding wall 72 interposed therebetween. A communication passage 19 through which the guide line 18 passes is formed adjacent to the gantry chamber R26 and the fixed irradiation chamber R27. The guide line 18 communicates with the vacuum box 21 of the cyclotron 2 and extends in the horizontal direction, is curved approximately 90 degrees vertically upward, passes through the communication passage 19, and is directed horizontally in the first floor portion above the ground. And a first branch path 18b and a second branch path 18c branched in two directions from the extraction path and communicating with the rotary gantry 3 and the fixed irradiation device 12, respectively. It is equipped with.

  In the particle beam therapy facility according to the present embodiment, the cyclotron, the rotating gantry, and the fixed irradiation device are installed at different levels of the building, respectively, and it becomes possible to reduce the site occupation area as much as possible according to the site area. As a result, it becomes easy to efficiently install the cyclotron, the rotating gantry, and the fixed irradiation device on a predetermined site. Furthermore, since the cyclotron is installed in the lowest layer of the building, it is easy to add an irradiation device such as a rotating gantry. In this embodiment, the rotating gantry and the fixed irradiation device can be used properly, which is effective for appropriate irradiation of the proton beam to the patient.

  As mentioned above, although this invention was concretely demonstrated based on the embodiment, this invention is not limited to the said embodiment. In the above-described embodiment, an aspect in which a plurality of rotating gantry is installed as a plurality of irradiation apparatuses and an aspect in which a rotating gantry and a fixed irradiation apparatus are installed are described, but even in an aspect in which a plurality of fixed irradiation apparatuses are provided. good. The particle accelerator is not limited to a cyclotron, and may be a synchrotron or a synchrocyclotron. Further, the particle beam (accelerated particles) is not limited to the proton beam, and may be a carbon beam (heavy particle beam) or the like.

1A, 1B, 1C, 1D, 1E, 1F, 1G ... Particle beam therapy equipment (accelerated particle irradiation equipment), 2 ... Cyclotron (particle accelerator), 3, 7, 8 ... Rotating gantry (rotating irradiation equipment), 4, 10, 13, 16, 18 ... guide line, 6A, 6B, 6C, 6D, 6E, 6F, 6G ... building, 10a ... take-out route, 10b, 13b, 16b, 18b ... first branch route, 10c, 13c, 16c, 18c ... second branch path, 12 ... fixed type irradiation device, 12a ... irradiation unit of fixed type irradiation device, 30 ... rotation unit, 32 ... irradiation unit of rotary gantry, P ... rotation axis, PL ... virtual plane, r ₁ × 2: Maximum width of the rotating gantry, L ₁ : Length of the rotating gantry in the rotation axis direction.

Claims (2)

A particle beam treatment facility having an irradiation device for irradiating accelerated particles to a patient,
A particle accelerator for generating the accelerated particles;
A guide line for guiding the accelerated particles generated by the particle accelerator to the irradiation device;
A multi-story building,
The irradiation device includes:
A rotating part rotatable around a rotation axis;
An irradiation unit that is disposed in the rotating unit and that irradiates the accelerated particles;
An introduction line connected to the guide line and the irradiation unit and introducing the accelerated particles guided by the guide line to the irradiation unit;
The introduction line is
A radial introduction line that is bent 90 degrees with respect to the rotation axis from the starting end connected to the guide line on the rotation axis and extends in the radial direction of the rotation part;
One end is connected to the terminal portion of the radial introduction line, the other end is connected to the irradiation unit, and the space between the one end and the other end is curved and extends in the circumferential direction of the rotating unit. An existing circumferential introduction line, and
The irradiation device having the introduction line is provided on the upper floor or the lower floor than the particle accelerator in the building,
The rotating part is
A first cylindrical part in which the irradiation part is disposed;
A second cylindrical portion having a smaller diameter than the first cylindrical portion;
A cone portion connecting the first cylindrical portion and the second cylindrical portion;
A front ring installed on the outer periphery of the front end of the first cylindrical portion;
A rear ring installed at the outer peripheral portion of the rear end of the first cylindrical portion,
The irradiation device includes:
A first roller device that is disposed below the first cylindrical portion and rotatably supports the rotating portion, and is in contact with an outer peripheral surface of the front ring and applies a rotational force to the front ring; ,
A second roller device that is disposed below the first cylindrical portion and rotatably supports the rotating portion, and is in contact with an outer peripheral surface of the rear ring and applies a rotational force to the rear ring; Have
The circumferential introduction line is disposed along the circumferential direction at a position spaced outward from the outer circumferential surface of the first cylindrical portion,
The building has an irradiation device room in which the irradiation device is installed,
The irradiation device room has an entrance floor part where the patient enters and exits, and a low floor part that is lower than the entrance floor part,
The irradiation device is installed directly above the particle accelerator and in the low floor portion,
The irradiation device chamber has a second low floor portion that is lower than the low floor portion between the first roller device and the second roller device when viewed from a horizontal direction orthogonal to the rotation axis. I have a,
The particle accelerator is substantially circular when viewed in plan.
A particle beam treatment facility characterized by that. The building has a rectangular outer shape when viewed in plan,
2. The particle beam therapy facility according to claim 1, wherein the irradiation apparatus is provided so that the circumferential introduction line intersects any side of the rectangle when viewed in plan. .

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