JP4221775B2 - X-ray diagnostic equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an X-ray diagnostic apparatus in which the posture of a top plate on which a subject (patient) is placed changes according to the tilting state of the tilting support. The present invention relates to a technique for facilitating work.
[0002]
[Prior art]
  FIG. 13 shows a configuration around a fluoroscopic table of an X-ray fluoroscopic apparatus (X-ray diagnostic apparatus) conventionally used in medical facilities such as hospitals. In the case of the X-ray fluoroscopic apparatus shown in FIG. 13, the raising / lowering support (main frame) 71 that holds the top board 70 on which the patient M is placed rotates with respect to the base (fixed base) 72 around the fixed point CN as the rotation center. The posture of the top board 70 changes as it moves up and down. With the top plate 70 set to an arbitrary angle, the patient M is irradiated with X-rays from an X-ray tube 73 provided on the front side of the top plate 70, and a transmitted X-ray image of the patient M generated by X-ray irradiation is obtained. Detection is performed by an image intensifier (I / I tube) 74 provided on the back side of the top plate. In order to prevent the bottom of the I / I tube 74 from hitting the floor surface FR when tilting the tilting support 71, the tilting support 71 is rotated as shown by a chain line in FIG. It is configured to rotate (shift up) while shifting laterally with respect to the center CN.
[0003]
[Problems to be solved by the invention]
  However, in the case of the above-described conventional X-ray fluoroscopic apparatus, the length (vertical dimension) of the image intensifier (I / I tube) 74 is very long. There is a problem that it is not easy for the patient M to get on and off the top board 70 or for the operator to work. In particular, for a serious patient M, getting on and off the top plate 70 at a high position is a heavy burden.
[0004]
  As shown in FIG. 14, the raising / lowering support 71 is disposed so as to be movable up and down with respect to the base (fixed base) 75, and the I / I tube 74 can be swung sideways with the upper edge one end as a fulcrum. When the patient M gets on and off the top board 70, the I / I tube 74 is first lifted, as shown by a one-dot chain line in FIG. An X-ray fluoroscopic apparatus that can temporarily lower the position 70 is also in practical use. However, in the case of this X-ray fluoroscopic apparatus, there is another problem that the apparatus becomes large and complicated as a result of the need for a moving mechanism that swings a large volume / heavy I / I tube 74 sideways. .
[0005]
  In view of the above circumstances, the present invention can set the height of the normal position of the top plate to be low without increasing the scale and complexity of the apparatus, and lowers the top plate from the normal position. It is an object of the present invention to provide an X-ray diagnostic apparatus that can temporarily lower the position of the top plate.
[0006]
[Means for Solving the Problems]
  In order to solve the above-described problems, an X-ray diagnostic apparatus according to the present invention includes a top plate on which a subject is placed, and a tilting device that changes the posture of the top plate by holding and tilting the top plate. And an X-ray tube disposed on the top side of the top plate and a transmission X-ray image detecting means disposed on the back side of the top plate so as to face the X-ray tube. In the X-ray diagnostic apparatus configured to detect the transmission X-ray image of the subject generated by the X-ray irradiation from the X-ray tube by the transmission X-ray image detection means, the transmission X-ray image detection means The plate-shaped transmitted X-ray image detecting means and the raising / lowering support are mounted in a cantilevered state so that they can be lifted to an arbitrary inclination angle with one end on the short side of the top plate as a fulcrum. Arbitrary tilt with the other end on the opposite side of the tilting support fulcrum as the fulcrum The fixed base so as to be capable of lifting every timeLifting support that is cantilevered and has approximately the same length as the tilting supportAnd tilting control means for controlling the tilting angle of the tilting support and the tilting angle of the lifting support according to the posture to be taken by the top board, the X-ray tube and the transmitted X-ray image detecting means When the tilting support is attached to the tilting support and the tilting state of the tilting support changes, the X-ray tube and the transmitted X-ray image detection means also move integrally with the tilting support.
[0007]
  According to a second aspect of the present invention, in the X-ray diagnostic apparatus according to the first aspect, the raising / lowering support has a long rectangular frame shape slightly smaller than the top plate.
[0008]
  According to a third aspect of the present invention, in the X-ray diagnostic apparatus according to the first or second aspect, the top plate is disposed on the raising / lowering support so as to be movable in a vertical direction or a horizontal direction. Yes.
[0009]
  Also,Claim 4In the X-ray diagnostic apparatus according to claim 1, the flat plate-like transmitted X-ray image detection means is an X-ray surface sensor in which a large number of X-ray detection elements are arranged vertically and horizontally.
[0010]
    [Action]
  Next, the posture setting action of the top plate in the X-ray diagnostic apparatus of the present invention will be described.
  In the X-ray diagnostic apparatus according to the first aspect of the invention, the position of the top plate is temporarily lowered as follows when the subject gets on or off the top plate. That is, both the raising / lowering support and the lifting support are brought to the lowest position where the lifting amount is zero by the raising / lowering control means. Then, the top and bottom supports are stacked on the floor surface, and the top plate is further stacked. The height of the top plate position is substantially the same as the thickness of the top and bottom support. It becomes a slight dimension that combines the thickness of the support.
  Then, after placing the subject on the top plate that has been temporarily lowered to a lower position, in order to move the top plate to an appropriate posture according to the imaging conditions, etc. Or lift the lifting support so that it is in the proper upright state. The top plate is mounted on the tilting support, and the posture of the top plate changes with the change in the tilting state of the tilting support. The tilting angle of both supports is controlled by the tilting motion control means so as to be in a tilted state, and the top board is shifted to a desired posture. Conversely, when the subject is lowered from the top plate, the position of the top plate is temporarily lowered in the same manner as above, and the subject is lowered from the top plate.Further, when the raising / lowering state of the raising / lowering support changes, the X-ray tube and the transmitted X-ray image detecting means move integrally with the raising / lowering support.
[0011]
  In the X-ray diagnostic apparatus according to the first aspect of the present invention, since the flat and transmitted X-ray image detecting means that is thinner and lighter than the image intensifier is used, the height of the position of the top plate is defined. As a result of the total thickness of the tilting support and lifting support being much thinner than the image intensifier of large volume and heavy objects, it becomes possible to sufficiently reduce the height of the position of the top plate, The cantilever coupling mechanism and the tilt angle control mechanism that can lift both supports are simple.
[0012]
  Also,Claim 4In the X-ray diagnostic apparatus of the present invention, the flat plate transmission X-ray image detection means is an X-ray surface sensor in which a large number of X-ray detection elements are arranged vertically and horizontally, and the reduction in thickness and weight is remarkable. The height of the position of the top plate can be lowered more sufficiently, and the cantilever coupling mechanism and tilt angle control mechanism of both supports become very simple, and the X-ray surface sensor outputs the X-ray irradiation. X-ray fluoroscopy can be performed by creating an X-ray fluoroscopic image based on the X-ray detection signal and displaying it on the monitor screen.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  Subsequently, an embodiment of the X-ray diagnostic apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an overall configuration of the X-ray fluoroscopic apparatus according to the embodiment, FIG. 2 is a perspective view showing a mechanism necessary for lifting the lifting support of the embodiment apparatus, and FIG. 3 is a support for raising and lowering the embodiment apparatus. FIG. 4 is a plan view showing a mechanism necessary for lifting the tilting support of the embodiment device, and FIG. 5 is a flat panel X-ray sensor for detecting a transmission X-ray image ( It is a top view which shows the structure of a flat transmission X-ray image detection means).
[0014]
  The X-ray fluoroscopic apparatus of the embodiment shown in FIG. 1 has a top plate 1 on which a patient (subject) M is placed, and holds the top plate 1 and lifts or lowers one end side as indicated by an arrow RA. A long rectangular frame-like raising / lowering support (main frame) 2 capable of changing the inclination angle θa and the raising / lowering support 2 are mounted, and one end side is lifted or lowered as indicated by an arrow RB to set the inclination angle θb. And a lifting support 3 having a long rectangular frame shape that can be changed. The tilting state of the tilting support (main frame) 2 is changed by controlling the tilt angles θa and θb of both supports 2 and 3, and the top board 1 is configured to take a necessary posture (tilt angle). The X-ray tube 4 on the top surface of the top plate and the flat panel X-ray sensor on the back side of the top plate (hereinafter referred to as “panel-type X-ray” as appropriate) (Abbreviated as “sensor”) 5, and is configured such that a transmitted X-ray image of the patient M generated by X-ray irradiation from the X-ray tube 4 is detected by the panel X-ray sensor 5.
[0015]
  In order to allow the tilting support 2 to be in a lifted state with an arbitrary inclination angle θa, with the end 2a on the short side of the top plate as a fulcrum, the tilting support 2 was installed on the lifting support 3 side. The lift support 3 is mounted in a cantilevered state supported by the rotary shaft 6. Further, in order to allow the lifting support 3 to be in a lifting state at an arbitrary inclination angle θb with the other end 3a side opposite to the tilting support fulcrum side as a fulcrum, the lifting support 3 is a fixed base of the floor surface FR. (Fixed base) It is supported by a rotating shaft 7 installed on the side of 8 and is cantilevered. Hereinafter, the configuration of each part of the embodiment apparatus will be described more specifically.
[0016]
  First, a mechanism necessary for lifting the lifting support 3 will be described. As shown in FIG. 2, the fixed base 8 in which the bearing through-hole is formed is erected on the floor surface FR so as to face the vicinity of the other end 3 a of the both side surfaces 3 b and 3 c of the lifting support 3. A rotating shaft 7 is integrally provided so as to protrude toward the fixed base 8 at a position facing the fixed base 8 on both side surfaces 3 b and 3 c of the lifting support 3. These rotary shafts 7 are fitted into the bearing through holes of the fixed base 8 so that the lift support 3 can be lifted with the rotary shaft 7 as a fulcrum.
[0017]
  Further, the sprocket 9 is fixedly coupled to the projecting end of the front rotating shaft 7 (as viewed in FIG. 2) of the two rotating shafts 7 and 7 and the sprocket 10 that rotates by driving the motor MB is lifted. Provided beside the support 3, a chain 11 for transmitting rotational force is spanned between the sprockets 9, 10. When the motor MB is driven, the rotation of the motor MB is transmitted to the sprocket 9. When the rotary shaft 7 is finally rotated, the lifting support 3 is lifted and the tilt angle θb is changed as shown by the one-dot chain line in FIG. Note that the drive control of the motor MB is executed by the raising / lowering control unit 12.
[0018]
  Next, a mechanism necessary for lifting the raising / lowering support 2 will be described. As shown in FIG. 3 and FIG. 4, the protruding piece 13 to which the rotating shaft 6 is integrally attached with the axial direction facing inward in the direction of the top side of the top plate is provided at one end 2 a of the tilting support 2. Projecting is provided below both side ends. Further, at both ends of the end surface 3d on the lifting side of the lifting support 3, as shown in FIG. 2, engaging pieces 14 having bearing through holes 14a formed so as to extend in the longitudinal direction of the top plate are provided. The raising / lowering support 2 is cantilevered so that the raising / lowering support 2 can be lifted with the rotation shaft 6 as a fulcrum by the rotation shaft 6 of the protruding piece 13 being rotatably fitted in the bearing through hole 14a of the engagement piece 14. It is mounted on the lifting support 3 in a combined state.
[0019]
  Further, as shown in FIG. 4, a sprocket 15 is coaxially and integrally attached and fixed to the rotary shaft 6 on the front side (as viewed in FIG. 4) of the raising / lowering support 2, and the lifting support is also supported. A sprocket 16 that is rotated by driving of a motor MA attached to the inner end surface of the support 3 is provided near one end 3 a of the side surface 3 b of the third side 3 b, and a rotational force transmission chain 17 is provided between the sprockets 15, 16. It is being handed over. Therefore, if the motor MA is driven, the rotation of the motor MA is transmitted to the sprocket 15 and the rotating shaft 6 finally rotates, so that the up-and-down support 3 is lifted as shown by a one-dot chain line in FIG. Thus, the inclination angle θa is changed. The control of the motor MA is also executed by the raising / lowering control unit 12 independently of the control of the motor MB.
[0020]
  Further, in the case of the embodiment apparatus, the top plate 1 is disposed on the raising / lowering support 2 so as to be movable in the vertical direction or the horizontal direction. The top plate 1 is controlled by the top plate drive control unit 18. Of course, it goes without saying that the posture of the top board 1 changes as the raising / lowering state of the raising / lowering support 2 changes.
[0021]
  The X-ray tube 4 is attached to the raising / lowering support 2 via a support column 19, and is controlled by an irradiation control unit 20 including a high voltage generator and the like to meet set irradiation conditions such as a tube voltage and a tube current. The line is configured to irradiate the patient M.
  On the other hand, the panel-type X-ray sensor 5 is attached to the raising / lowering support 2 so as to face the X-ray tube 4 as shown in FIG. Changes, the X-ray tube 4 and the panel type X-ray sensor 5 also move integrally with the tilting support 2, and the relative positional relationship between the X-ray tube 4 and the panel type X-ray sensor 5 with respect to the tilting support 2 is The structure is kept constant.
  Note that the control by the upper / lowering movement control unit 12, the top panel drive control unit 18, or the irradiation control unit 20 is performed according to a command signal sent from the imaging control unit 23 in response to an input operation from the keyboard 21 or the mouse 22. Is called.
[0022]
  Further, a signal collection unit 24 that collects X-ray detection data output from the panel type X-ray sensor 5 and sends it to the image processing unit 25 is installed at the subsequent stage of the panel type X-ray sensor 5. An image processing unit 25 after the signal collecting unit 24 stores an AD conversion unit 26 that converts X-ray detection data into a digital signal, a detection data memory 27 that stores digitized X-ray detection data, and a detection data memory 28. Data processing unit 28 for generating an X-ray image by performing necessary image processing such as edge enhancement and filtering on the detected X-ray detection data, and an X-ray image for storing an X-ray fluoroscopic image obtained by the image processing A memory 29 is provided. Normally, the X-ray images stored in the X-ray image memory 29 are continuously updated during imaging.
[0023]
  Further, in the X-ray fluoroscopic apparatus of the embodiment, the image display monitor 30 that displays the X-ray fluoroscopic image stored in the X-ray image memory 29 and the X-ray image stored in the X-ray image memory 29 are converted into a sheet such as a film. An image printing / recording unit 31 for printing an image as an X-ray photograph or an image storage memory 32 for recording and storing an X-ray fluoroscopic image is provided.
  The display of the X-ray fluoroscopic image on the image display monitor 30, the output of the X-ray photograph by the image printing recording unit 31, or the storage of the image by the image storage memory 32 is performed by operating input from the keyboard 21 or the mouse 22. It is executed according to a command signal sent from the control unit 23.
[0024]
  Next, the configuration of the panel X-ray sensor 5 itself will be specifically described. As shown in FIG. 5, the panel X-ray sensor 5 is a sensor in which a large number of X-ray detection elements DX are arranged vertically and horizontally. The number of X-ray detection elements XD arranged is, for example, horizontal (x) A square matrix configuration with direction 1024 and longitudinal (y) direction 1024 may be mentioned. Since this panel type X-ray sensor 5 is much thinner and lighter than an image intensifier, it is very easy to mount, and a conventional large-volume image intensifier is a celestial sensor. The inconvenience of having to set the height of the normal position of the plate very high has been solved, and not only can the height of the normal position of the top plate be set lower, but also the resolution is sufficient and the image quality is high. An image is obtained.
[0025]
  In the panel type X-ray sensor 5, an X-ray conversion layer for converting incident X-rays into electric charges or light and elements for detecting electric charges or light generated in the X-ray conversion layer are usually arranged in a matrix form vertically and horizontally. The detection array layer has a laminated structure, and there are a direct conversion type and an indirect conversion type.
  In the case of the direct conversion type, the X-ray conversion layer is composed of a selenium layer, a CdZnTe layer, or the like that converts incident X-rays directly into charges, and is formed on the surface of the detection array layer as a charge detection element so as to face the surface electrode The charge is detected and stored in the capacitor, and the accumulated charge is taken out via a TFT (Thin Film Transistor), and each charge detection element, a part of the X-ray conversion layer thereon, the capacitor and One X-ray detection element XD is formed by the TFT.
[0026]
  In the case of the indirect conversion type, the X-ray conversion layer is composed of a scintillator layer that converts incident X-rays into light, detects light with a photodiode formed as a light detection element on the surface of the detection array layer, and stores it in a capacitor. In addition, the accumulated charge is taken out through the TFT, and each photodetection element, a part of the X-ray conversion layer thereon, the capacitor, and the TFT form one X-ray detection element XD. .
[0027]
  In the panel type X-ray sensor 5, as shown in FIG. 6, each X-ray detection element XD,..., XD is connected to the readout wirings 34, 35 running vertically and horizontally through the TFT 33, and the readout wiring Reference numerals 34 and 35 are respectively connected to the horizontal (x) readout drive unit 36 or the vertical (y) readout drive unit 37, and scanning signals for readout are sent to the horizontal and vertical readout drive units 36 and 37. . Since each X-ray detection element XD of the panel type X-ray sensor 5 is specified based on addresses 0 to 1023 which are sequentially assigned to the X-ray detection elements XD along the horizontal and vertical arrangements. The scanning signal for reading is a signal designating a horizontal (x) direction address or a vertical (y) direction address, respectively.
[0028]
  In accordance with a horizontal / vertical scanning signal, a reading voltage is applied from the horizontal reading driving unit 36 or the vertical reading driving unit 37 to the reading wirings 34 and 35, so that the capacitors C1 from the detection elements XD,. Are sequentially collected as X-ray detection signals from the TFT 33 through the readout wiring 35 and further as X-ray detection data via the preamplifiers 38 and the multiplexers 39 of the signal collecting unit 24.
[0029]
  From the above, the method of reading the detection signal from the panel type X-ray sensor 5 is generally similar to a video detector such as a normal TV camera.
  In the case of the panel type X-ray sensor 5 of the embodiment apparatus, both the read drive units 36 and 37 constituting the signal collecting unit 24, the preamplifier 38 and the multiplexer 39 are also provided on the surface of the detection array layer of the panel type X-ray sensor 5. It is installed at the periphery and has a structure that is further integrated.
  The detection data memory 27 for storing X-ray detection data obtained from the panel X-ray sensor 5 and the X-ray image memory 29 for storing an X-ray fluoroscopic image are X-ray detection elements in the panel X-ray sensor 5. A frame memory type storage device having a matrix configuration corresponding to the vertical and horizontal matrix configuration of XD is used.
[0030]
  Subsequently, a typical posture setting example of the top board 1 executed by controlling the tilt angles θa and θb of the raising / lowering support 2 and the lifting support 3 in the embodiment apparatus described above will be concretely described with reference to the drawings. I will explain it.
  (1)  Minimum height posture setting
  The lower the position of the top board 1, the easier it is to put the patient M on the top board 1 or to lower it. In the embodiment apparatus, as shown in FIG. 7, the position of the top board 1 when the supports 2 and 3 are not lifted so that the inclination angles θa and θb of the raising and lowering support 2 and the lifting support 3 are both zero. Is the lowest height setting. Therefore, in the case of the embodiment apparatus, the patient M is usually placed on the top board 1 or the patient M is lowered from the top board 1 with the minimum height posture setting. In the case of the minimum height posture setting, the top and bottom support 1 and the lifting support 3 are stacked on the floor surface FR, and the top plate 1 is further overlaid. The height dimension is a small dimension that is substantially the sum of the thickness of the raising / lowering support 2 and the thickness of the lifting support 3. In the minimum height posture setting, of course, the direction of the top board 1 is horizontal.
[0031]
  (2)  Forward tilt posture setting
  As shown in FIG. 8, the tilt angle θa of the tilting support 2 is maintained at zero (without driving the motor MA), and the lift 3 is rotated by rotating the sprocket 9 clockwise by driving the motor MB. If the tilt angle θb is changed by lifting, the top board 1 assumes a forward tilt posture with a gradient corresponding to the tilt angle θb of the lift support 3.
[0032]
  (3)  Horizontal posture setting at desired height
  As shown in FIG. 9, if both the tilting angles θa and θb of the raising / lowering support 2 and the lifting support 3 are equal, the raising / lowering support 2 is parallel to the floor surface FR, and the top board 1 is in a horizontal posture. Take. The height of the top plate 1 is proportional to the magnitude of the tilt angles θa and θb. That is, by rotating the sprocket 15 counterclockwise by driving the motor MA, the raising / lowering support 2 is lifted by an amount corresponding to the desired height to an inclination angle θa, and the procket 9 is rotated clockwise by driving the motor MB. By rotating, the lifting support 3 is lifted by an amount corresponding to the desired height, so that the same inclination angle θb = θa.
[0033]
  (Four)  Vertical posture setting
  As shown in FIG. 10, the tilt angle θa of the tilting support 2 is maintained at zero (without driving the motor MA), and lifted by rotating the procket 9 by 90 ° clockwise by driving the motor MB. If the support 3 is lifted at a right angle so that the tilt angle θb = 90 °, the top board 1 is in a vertical posture, and the patient M can be taken in a standing position.
[0034]
  (Five)  Reverse tilt posture setting
  As shown in FIG. 11, the tilt angle θb of the lifting support 3 is maintained at zero (without driving the motor MB), and the tilt support is rotated by rotating the sprocket 15 counterclockwise by driving the motor MA. If 2 is lifted to an inclination angle θa, the top board 1 assumes a reverse inclination posture with a gradient corresponding to the inclination angle θa of the tilting support 2.
[0035]
  Normally, when a series of X-ray fluoroscopy is performed, the patient M is irradiated with X-rays from the X-ray tube 4 while changing the posture of the top board 1 one after another, and a panel type X-ray is generated along with the X-ray irradiation. The X-ray fluoroscopic image finally obtained based on the X-ray detection data output from the sensor 5 is displayed on the screen of the image display monitor 30, and the necessary X-ray fluoroscopic image is recorded on the sheet as needed by the image printing recording unit 31. Then, X-ray fluoroscopy is executed by obtaining an X-ray photograph or the like.
[0036]
  In the case of the embodiment apparatus, a panel type X-ray sensor (a flat plate transmission X-ray image detecting means) that is much thinner and lighter than the image intensifier is used, and the height of the position of the top plate is specified. As a result of the total thickness of the tilting support and lifting support that is much thinner than the thickness of the image intensifier for large volumes and heavy objects, it becomes possible to set the height of the top plate position much lower, The operator's work is facilitated, and a simple mechanism is sufficient for lifting both supports necessary for temporarily lowering the position of the top board.
[0037]
  The present invention is not limited to the above-described embodiment, and can be modified as follows.
  (1) In the case of the device of the embodiment, the tilt angle is changed by lifting the tilting support or lifting support using a motor, a sprocket and a chain, but as shown in FIG. , 42 and locking rods 43, 44 that are expanded and contracted by the cylinders 41, 42, an apparatus having a configuration in which the tilting support θ2 and the lifting support 3 are lifted to change the tilt angles θa, θb is given as a modification. .
[0038]
  More specifically, in the case of the modified apparatus, the end sides of the cylinders 41 and 42 are cantilevered by the bases 45 and 46 and the rotary shafts 47 and 48, respectively, and the tips of the locking rods 43 and 44 are supported in a tilting manner. 2 or the side of the lifting support 3 is locked in locking long holes 49, 50 formed so as to continue in the longitudinal direction, and the elevation angle of the cylinders 41, 42 such as hydraulic pressure according to the posture to be taken by the top plate 1 Further, by adjusting the expansion / contraction amount of the locking rods 43 and 44, the inclination angles θa and θb of the raising / lowering support 2 and the lifting support 3 are changed, for example, the gentle top plate 1 is set in the reverse inclination posture setting state. It is the composition which does In the modified apparatus shown in FIG. 12, the cantilever connection of the raising / lowering support 2 is replaced by a cantilever connection by a bearing hole and a rotating shaft, and the embodiment apparatus is also a cantilever connection by a hinge 51. Is different.
[0039]
  (2) The apparatus according to the embodiment is configured to include the image printing recording unit 31 and the image storage memory 32, but is not provided with one or both of the image printing recording unit 31 and the image storage memory 32. Is also mentioned as a modification.
[0040]
  (3) An X-ray fluoroscopic apparatus having a configuration in which an apparatus for taking a transmission X-ray image on a photographic film is additionally provided in the embodiment apparatus.
[0041]
  (4) In the example apparatus, the flat plate type transmission X-ray image detection means is a see-through type apparatus in which the flat panel type X-ray sensor is used. A non-perspective type X-ray imaging apparatus having a cassette configuration is also exemplified as a modification.
[0042]
【The invention's effect】
  As described in detail above, according to the X-ray diagnostic apparatus of the first aspect of the present invention, the flat plate transmission X-ray image detecting means that is much thinner and lighter than the image intensifier is used. The total thickness of the tilting support and lifting support that defines the height of the plate position is much thinner than the thickness of the image intensifier for large and heavy objects, so the height of the top plate position is lowered. It is possible to set, the operator's work is easy, and the mechanism that can lift both supports necessary to temporarily lower the position of the top plate is also a simple mechanism without increasing the scale and complexity This reduces the burden on patients who get on and off the top board.
[0043]
  Also,Claim 4According to the X-ray diagnostic apparatus of the present invention, the transmitted X-ray image detecting means is an X-ray surface sensor that is remarkably thin and lightweight, so that the position of the top plate can be sufficiently lowered and both supports can be lifted. In addition to the simpler mechanism, X-ray fluoroscopy can be performed by creating an X-ray fluoroscopic image based on the X-ray detection signal output from the X-ray surface sensor and displaying it on the monitor screen.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an overall configuration of an X-ray fluoroscopic apparatus according to an embodiment.
FIG. 2 is a perspective view showing a mechanism necessary for lifting a lifting support of the embodiment device;
FIG. 3 is a front view showing a mechanism required for lifting the raising / lowering support of the embodiment device;
FIG. 4 is a plan view showing a mechanism necessary for lifting the raising / lowering support of the embodiment device;
FIG. 5 is a plan view showing a configuration of a panel type X-ray sensor in the embodiment apparatus.
FIG. 6 is a block diagram showing a circuit configuration around the panel type X-ray sensor of the embodiment apparatus.
FIG. 7 is a front view showing a minimum height posture setting state of the top plate of the embodiment device.
FIG. 8 is a front view showing a forward tilt posture setting state of the top plate of the embodiment device.
FIG. 9 is a front view showing a horizontal posture setting state of the top plate of the embodiment device.
FIG. 10 is a front view showing a vertical posture setting state of the top plate of the embodiment device.
FIG. 11 is a front view showing a reverse tilt posture setting state of the top plate of the embodiment device.
FIG. 12 is a front view showing a reverse tilt posture setting state of the top plate of the modified device.
FIG. 13 is a front view showing a schematic configuration of a perspective table of a conventional apparatus.
FIG. 14 is a front view showing a schematic configuration of a see-through table of another conventional apparatus.
[Explanation of symbols]
  1 ... top plate
  2… Tilting support
  3 ... Lifting support
  4 ... X-ray tube
  5 ... Panel type X-ray sensor
  6, 7… rotating shaft
  8… fixed base
  9, 15 ... sprocket
  11, 17 ... chain
  12 ... Tilting and tilting control unit
  25 ... Image processing unit
  41, 42 ... Cylinder
  43, 44 ... Locking rod
  49, 50 ... locking slot
  51 ... Trillion
  M ... Patient
  MA, MB ... motor
  XD ... X-ray detection element

Claims (4)

A top plate on which the subject is placed and a tilting support that changes the posture of the top plate by holding and tilting the top plate and is arranged on the top side of the top plate A transmission X-ray image detecting means disposed opposite to the X-ray tube on the back side of the X-ray tube and the top plate, and transmission X of the subject generated by X-ray irradiation from the X-ray tube In an X-ray diagnostic apparatus configured to detect a line image by a transmission X-ray image detection means, a flat plate transmission X-ray image detection means serving as the transmission X-ray image detection means, and the tilting support are attached to a ceiling. It is mounted in a cantilevered state so that it can be lifted to an arbitrary tilt angle with one end on the short side of the plate as a fulcrum, and the other end on the side opposite to the tilting support fulcrum is optional is has the fixed base so as to be lifted to the inclination angle of the strip bond, before And support lifting has substantially the same length as the raising倒動support, and raising倒動control means for controlling the inclination angle and the lifting angle of inclination of the support force倒動support according to the posture to take the top plate And the X-ray tube and the transmitted X-ray image detecting means are attached to the tilting support, and when the tilting state of the tilting support changes, the X-ray tube and the transmitted X-ray image detecting means X-ray diagnostic apparatus characterized in that it also moves integrally with the raising / lowering support.   The X-ray diagnostic apparatus according to claim 1, wherein the raising / lowering support has a long rectangular frame shape slightly smaller than the top plate.   3. The X-ray diagnosis apparatus according to claim 1, wherein the top plate is disposed on the raising / lowering support so as to be movable in a vertical direction or a horizontal direction. apparatus.   4. The X-ray diagnostic apparatus according to claim 1, wherein the flat plate-like transmitted X-ray image detecting means is an X-ray surface sensor in which a large number of X-ray detecting elements are arranged vertically and horizontally. X-ray diagnostic equipment.

Images