JP2007151607A - X-ray diagnostic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure safety for a subject when raising or lowering a senior subject or a subject with disability or the like together with a top plate and performing X-ray radiography. <P>SOLUTION: When raising or bringing down the top plate 15 where the subject 150 is mounted in a prescribed direction and setting a radiography position in X-ray radiography, the movement control parameter setting part 33 of an operation part 3 sets the suitable raising and lowering stroke, raising and bringing-down speed and raising and bringing-down acceleration of the top plate 15 as movement control parameters on the basis of the medical information and subject information of the subject 150 supplied from an RIS (radiology information system) through a network. Then, a system control part 34 supplies movement control signals generated on the basis of the movement control parameter to the mechanism driving part 164 of a movement mechanism part 16 and controls the rising and lowering of the top plate 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an X-ray diagnostic apparatus, and more particularly to an X-ray diagnostic apparatus that sets an imaging region of a subject by moving a top board or an imaging system in a predetermined direction.

  Medical image diagnosis using an X-ray diagnostic apparatus, an MRI apparatus, or an X-ray CT apparatus has made rapid progress along with the development of computer technology, and is indispensable in today's medical care.

  An X-ray diagnostic apparatus for the purpose of digestive organ diagnosis normally collects projection data of the subject by irradiating the patient or examinee (hereinafter referred to as a subject) with X-rays. (TV) a bed, an image data generation unit that processes the projection data to generate image data, an operation unit that operates X-ray irradiation and movement mechanism of the X-ray TV bed, and the like. A top plate on which the subject is placed is provided.

  For example, when performing X-ray fluoroscopy of the stomach using the above-described X-ray diagnostic apparatus, the subject is attached to the top plate in order to attach a contrast medium previously injected into the stomach of the subject to a wide range of stomach walls. At the same time, a method of performing X-ray imaging while being tilted within a predetermined range (hereinafter referred to as a tilting stroke) is generally performed (see, for example, Patent Document 1).

Then, the top plate is raised and lowered based on the uniformly set up and down stroke, the up and down speed, and the up and down acceleration without depending on the state of the subject (for example, the age or the presence or absence of obstacles). It was.
JP-A-6-133965

  As described above, when X-ray imaging is performed while the subject is tilted together with the top plate in a predetermined direction, the subject that shifts from the supine state to the standing state at a high tilt speed or tilt acceleration is applied to both of the top plates. By holding the handgrip attached to the side and fixing the whole body to the top plate, the fall from the top plate is prevented.

  However, it is not easy for an elderly person, an infant, a woman, or a subject having a disease or a disorder to fix the upper body with a handgrip or the like, and there is a risk of being damaged by dropping. Similarly, the so-called reverse tilting posture in which the top plate is tilted until the subject's head is positioned below the leg portion also has a problem that the subject is greatly painful.

  The present invention has been made in view of such problems, and by controlling the movement mechanism based on the personal information of the subject, it is possible to improve the safety of the subject under examination and the examination efficiency. An X-ray diagnostic apparatus is provided.

  In order to solve the above problems, an X-ray diagnostic apparatus according to the present invention according to claim 1 is an X-ray irradiating means for irradiating a subject with X-rays, and X for detecting X-rays transmitted through the subject. Ray detection means, image data generation means for generating image data based on X-ray information detected by the X-ray detection means, a top plate on which the subject is placed, and a top plate for raising and lowering the top plate It is characterized by comprising a tilting means and a tilting control means for controlling the top plate tilting means based on the personal information of the subject.

  According to a sixth aspect of the present invention, there is provided an X-ray diagnostic apparatus of the present invention, an X-ray irradiation means for irradiating a subject with X-rays, an X-ray detection means for detecting X-rays transmitted through the subject, Image data generation means for generating image data based on X-ray information detected by the X-ray detection means, and an imaging system for moving the X-ray generation means and the X-ray detection means along the body axis direction of the subject A moving means and a movement control means for controlling the moving speed of the X-ray generation means and the X-ray detection means based on the personal information of the subject are provided.

  According to the present invention, by controlling the moving mechanism based on the personal information of the subject, safety for the subject under examination is ensured and examination efficiency is improved.

  Embodiments of the present invention will be described below with reference to the drawings.

  The feature of the embodiment of the present invention described below is that when the top plate provided on the bed of the X-ray diagnostic apparatus is tilted, the tilting stroke, the tilting speed, and the tilting acceleration of the top plate are measured. The setting is based on personal information. The personal information in this case is, for example, medical information or subject information of the subject, such as the diseased part or examination part of the subject, the name of the disease, the health level (degree of disorder), etc. The information includes, but is not limited to, the age and sex of the subject.

  In the following embodiments, an X-ray diagnostic apparatus for the purpose of diagnosing digestive organs will be described. However, the present invention is not limited to this, and an X-ray diagnostic apparatus for diagnosing circulatory organs and other areas is used. There may be.

(Device configuration)
The configuration of the X-ray diagnostic apparatus according to the embodiment of the present invention will be described with reference to FIGS. However, FIG. 1 is a diagram for explaining an outline of the X-ray diagnostic apparatus, and FIG. 2 is a block diagram showing an overall configuration of the X-ray diagnostic apparatus.

  The X-ray diagnostic apparatus 100 of the present embodiment shown in FIG. 1 generates an X-ray TV bed 1 that irradiates a subject with X-rays and collects projection data, and generates a high voltage for irradiating X-rays. A high voltage generator 2 that operates, an operation unit 3 that inputs an instruction signal to a moving mechanism provided in the X-ray TV bed 1, and image data that generates and stores image data based on the X-ray projection data A generation / storage unit 4 is provided.

  Next, the configuration and function of each unit in the X-ray diagnostic apparatus 100 will be described with reference to the block diagram of FIG.

  The X-ray TV bed 1 of the X-ray diagnostic apparatus 100 two-dimensionally detects the X-ray generator 11 that irradiates the subject 150 with X-rays and the X-rays that have passed through the subject 150, and this detection. An X-ray detection unit 12 that generates projection data based on the signal, a holding unit 13 that holds the X-ray generation unit 11 and the X-ray detection unit 12, and a top plate 15 on which the subject 150 is placed; An X-ray generation unit 11 and an X-ray detection unit 12 (hereinafter collectively referred to as an imaging system) and a top plate 15 mounted on the holding unit 13 based on a movement control signal supplied from the operation unit 3 are predetermined. The moving mechanism part 16 which moves to a direction is provided.

  The X-ray generator 11 includes an X-ray tube 111 that irradiates the subject 150 with X-rays, and an X-ray diaphragm that forms an X-ray weight (cone beam) with respect to the X-rays irradiated from the X-ray tube 111. 112 is provided. The X-ray tube 111 is a vacuum tube that generates X-rays, and accelerates electrons emitted from a cathode (filament) by a high voltage to collide with a tungsten anode to generate X-rays. On the other hand, the X-ray restrictor 112 is located between the X-ray tube 111 and the subject 150 and has a function of narrowing the X-ray beam irradiated from the X-ray tube 111 to a predetermined irradiation size.

  On the other hand, the X-ray detection unit 12 has an X-ray I.D. I. And a method using a so-called flat detector in which X-ray detectors are two-dimensionally arranged. Here, X-ray I.D. I. However, the present invention is not limited to this method, and other methods such as a flat panel detector may be used.

  That is, the X-ray detection unit 12 performs X-ray I.D. I. 121, an optical system 122, an X-ray TV (television) camera 123, and an A / D converter 124. X-ray I.D. I. 121 and the optical system 122 convert X-rays transmitted through the subject 150 into visible light, and further perform luminance multiplication in the process of light-electron-light conversion to form sensitive projection data. The X-ray TV camera 123 converts the above-described optical projection data into an electrical signal using a CCD image pickup device, and the A / D converter 124 converts the time series output from the X-ray TV camera 123 in time series. Convert electrical signals into digital signals.

  Next, the holding unit 13 has, for example, a C-shaped arm (C arm), an X-ray generation unit 11 at one end of the C arm, and an X-ray detection unit at the other end. 12 are mounted facing each other. The imaging system (that is, the X-ray generation unit 11 and the X-ray detection unit 12) is rotated around the subject 150 by the imaging system moving mechanism 161 described later in the moving mechanism unit 16 or the body axis direction of the subject 150. Move to.

  In addition, the top plate 15 on which the subject 150 is placed moves the subject 150 up and down at a predetermined angle by the top plate raising / lowering mechanism 163 and further moves the body 150 in the body axis direction and left / right direction by the top plate moving mechanism 162. It has a function to move. The details of raising and lowering the top plate 15 will be described later.

  On the other hand, the moving mechanism unit 16 moves the imaging system moving mechanism 161 that rotates or moves the imaging system around the subject 150 and the top plate 15 on which the subject 150 is placed in the body axis direction or the left-right direction of the subject 150. Based on the movement control signal supplied from the operation unit 3 and the above-described imaging system movement, a top-plate moving mechanism 162 that moves to the top, a top-plate raising / lowering mechanism 163 for raising / lowering the top 15 A mechanism driving unit 164 for driving the mechanism 161, the top plate moving mechanism 162, and the top plate raising / lowering mechanism 163 is provided.

  Next, the top plate 15 and the imaging system provided on the X-ray TV bed 1 of the X-ray diagnostic apparatus 100 and the moving system thereof will be described in more detail with reference to FIG.

  FIG. 3 shows a so-called undertable tube type X-ray TV bed 1 in which an X-ray detection unit 12 is arranged above the top plate 15 on which the subject 150 is placed and an X-ray generation unit 11 is arranged below. Yes. The top 15 is attached so as to be slidable in the body axis direction and the left-right direction of the subject 150 (not shown). Furthermore, the top 15 is attached to the longitudinal end portion of the subject 150 and the legs of the subject 150 are attached. A footrest (FR) for placing the shoulder, a shoulder rest (SR) for fixing the shoulder of the subject 150, a handgrip (HG) for preventing the subject 150 from falling from the footrest FR in a standing position, etc. Is provided.

  Also, arrows A to E shown in FIG. 3 indicate the direction of up / down / moving / turning of the top 15 and the imaging system, and arrow A indicates the up / down direction of the top 15 and the arrows B and C shows the body axis movement direction and the left-right movement direction. As shown in FIG. 4, tilting means that the top 15 on which the subject 150 is placed is standing (FIG. 4 (a)) horizontal position (FIG. 4 (b)) reverse tilting (head is leg). It is a function which rotates in the range of FIG.4 (c) which becomes lower than a part. The body axis moving direction means the longitudinal direction of the top plate 15, and the left and right moving direction means the width direction perpendicular to the body axis moving direction.

  On the other hand, an arrow D indicates the rotation direction of the imaging system along the C-shaped holding unit 13, and an arrow E indicates the moving direction of the imaging system along the body axis of the subject 150 who is supine.

  Returning to FIG. 2, the high voltage generator 2 generates a high voltage to be applied between the anode and the cathode in order to accelerate the thermal electrons generated from the cathode of the X-ray tube 111 in the X-ray generator 11. X-ray control for controlling X-ray irradiation conditions such as tube current, tube voltage, and irradiation time in the high voltage generator 21 according to the X-ray irradiation instruction signal supplied from the generator 21 and the system control unit 34 of the operation unit 3 A portion 22 is provided.

  On the other hand, the image data generation / storage unit 4 has a function of generating and storing image data to be displayed on a display unit 31 (to be described later) in the operation unit 3, and includes a storage circuit and an arithmetic circuit (not shown). The storage circuit sequentially stores the X-ray projection data collected by the X-ray detection unit 12 to generate image data. On the other hand, the arithmetic circuit performs operations such as image processing for the purpose of contour enhancement and S / N improvement on the generated image data as necessary. In generating bolus DSA image data, a subtraction process is performed between the mask image data collected from the subject 150 before administration of the contrast agent and the contrast image data collected from the subject 150 after administration of the contrast agent.

  Next, the operation unit 3 includes a display unit 31, an input unit 32, a movement control parameter setting unit 33, and a system control unit 34. The display unit 31 includes a display data generation circuit, a conversion circuit, and a monitor (not shown). The display data generation circuit converts the image data generated by the image data generation / storage unit 4 into a predetermined display form, and further Display data is generated by superimposing subject information or the like, which is incidental information. Next, the conversion circuit performs D / A conversion and television format conversion on the display data generated by the display data generation circuit, generates a video signal, and displays it on the monitor.

  Next, the input unit 32 includes, for example, a display panel made of liquid crystal, an operation panel having a keyboard, a mouse, a joystick, a lever, a switch, etc., and inputs medical information of the subject 150, subject information, imaging conditions, A display condition and an X-ray irradiation condition are set, a movement mode is selected, an imaging start command is input, and a movement instruction signal is input to the top 15 or the imaging system. However, subject information and medical information for setting the up / down stroke, up / down speed and up / down acceleration of the top 15 and the moving speed of the imaging system are RIS (Radiation Department Information Management System) connected via a network. ) Can also be read out.

  FIG. 5 shows a specific example of the operation panel provided in the input unit 32 of the operation unit 3. The operation panel 320 includes a top plate raising lever 321 for raising and lowering the top plate 15, and photographing. An imaging start button 322 for inputting a start command, a top plate moving lever 323 for instructing movement of the top plate 15 in the body axis direction and left-right direction, and a diaphragm for adjusting the opening degree of the X-ray diaphragm 112 are provided. An adjustment lever 324, a movement mode selection button 325 for selecting a movement mode for raising and lowering the top plate 15 or moving the imaging system, and the like are provided.

  The movement modes include a normal movement mode and a safe movement mode. In the safe movement mode, the top 15 is usually moved up and down and the imaging system is moved with respect to an elderly subject or a subject having a disorder or the like. Used when performing.

  Returning to FIG. 2 again, the movement control parameter setting unit 33 of the operation unit 3 includes a control circuit and a storage circuit (not shown). The storage circuit is suitable for raising and lowering the top 15 or moving the imaging system. Movement control information such as stroke, speed, and acceleration is stored in advance corresponding to the age and sex of the subject, and the degree of failure. The control circuit uses the movement control information extracted from the storage circuit based on the medical information and the subject information of the subject 150 supplied from the input unit 32 or the RIS via the system control unit 34. Set the parameters.

  The system control unit 34 includes a CPU and a storage circuit (not shown). The storage circuit stores movement control parameters in the normal movement mode in advance, and the above-described various information input / selected / set in the input unit 32. Is also stored in the storage circuit. The CPU performs overall control of each unit provided in the above-described X-ray diagnostic apparatus 100 based on these pieces of information, and raises and lowers the moving mechanism and generates and displays image data.

  For example, when the normal movement mode is selected by the movement mode selection button 325 of the input unit 32, the system control unit 34 starts the top 15 based on the movement control parameters of the normal movement mode stored in the storage circuit. A movement control signal for setting the tilting stroke, the raising / lowering speed, the raising / lowering acceleration, and the moving speed of the imaging system is generated and supplied to the mechanism driving unit 164 of the moving mechanism unit 16.

  On the other hand, when the safe movement mode is selected, the system control unit 34 sets the movement control set by the movement control parameter setting unit 33 based on the medical information or the subject information of the subject 150 supplied from the input unit 32 or the RIS. A movement control signal is generated using the parameters and supplied to the mechanism driving unit 164.

  Next, the raising / lowering stroke, the raising / lowering speed, and the raising / lowering acceleration when the top plate 15 is raised based on the movement control signal supplied from the operation unit 3 will be described with reference to FIGS.

  FIG. 6 is a diagram for explaining the up / down stroke in the normal movement mode and the up / down stroke in the safe movement mode. For example, the up / down stroke in the normal movement mode has a reverse inclination up / down angle (θ = −θ1). ) To the standing angle (θ = θ3 = 90 degrees). On the other hand, the raising / lowering stroke in the safe movement mode for an elderly subject, a subject with a disorder, or the like is, for example, a raising / lowering angle at a predetermined oblique position from a horizontal position (θ = 0 degrees> −θ1) ( It is set in the range of θ = θ2 <θ3). Then, as described above, the rising / falling stroke is set based on the age and sex of the subject 150, the degree of failure, and the like.

  FIG. 7 is a diagram for explaining the erection speed and erection acceleration in the normal movement mode and the erection speed and erection acceleration in the safe movement mode, and FIG. 7A is erected at the same acceleration α1. FIG. 5 shows the up / down speed characteristic MV1 in the normal movement mode and the up / down speed characteristic MV2 in the safe movement mode.

  For example, in the normal movement mode, the vertical acceleration is α1 during the period [t0-t11], the constant vertical acceleration V1 during the period [t11-t21], and the vertical acceleration −α0 during the period [t21-t31]. The top plate 15 is erected and the erection is stopped at t = t31.

  On the other hand, in the safe movement mode, at the period [t0-t12 (t12 <t11)], the tilting acceleration α1, and at the period [t12-t22 (t22> t21)], at the constant tilting speed V2, At t22-t32], the top 15 is raised at the rising acceleration-α0, and the rising is stopped at t = t32.

  FIG. 7 (b) shows a safe movement mode in which the vehicle is tilted at a tilting speed characteristic MV1 and a tilting acceleration α3 (α3 ≠ α1) in the normal movement mode that tilts at a tilting acceleration α1 in the same manner as in FIG. 7 (a). The rising / falling speed characteristic MV3 is shown. In the safe movement mode in this case, the rising acceleration α3 (α3 <α1) in the period [t0-t13], the constant rising speed V3 in the period [t13-t23], and the period [t23-t33]. The top plate 15 is erected at an erection acceleration −α3, and the erection is stopped at t = t33.

  As described above, the rising speed of the top 15 in the safe movement mode is set to a value smaller than the rising speed in the normal movement mode, and the rising acceleration in the safe movement mode is also set as shown in FIG. Although the safety for the subject 150 is further improved by setting a value smaller than the vertical acceleration in the normal movement mode, when the time required for the vertical movement becomes a problem, as shown in FIG. The vertical acceleration in the normal movement mode and the safe movement mode may be set equal to each other, and the vertical acceleration in the safe movement mode is set smaller than the vertical acceleration in the normal movement mode so that the normal movement mode and the safe movement mode are started. You may set the fall speed to be the same.

(Procedure for elevating the top plate)
Next, the procedure for raising and lowering the top plate in the safe movement mode of the present embodiment will be described with reference to the flowchart of FIG. 8. it can.

  The operator of the X-ray diagnostic apparatus 100 first places the subject 150 on the top 15 (step S1 in FIG. 8), and then uses the input unit 32 of the operation unit 3 to perform imaging conditions, display conditions, and X-ray irradiation. Conditions and the like are set, and a safe movement mode is selected using the movement mode selection button 325 (step S2 in FIG. 8).

  Upon receiving this selection signal, the system control unit 34 of the operation unit 3 collects medical information and subject information of the subject 150 from the examination orders supplied in advance from the RIS via the network (step S3 in FIG. 8). ), For example, information such as age and sex in the subject information and the degree of failure in the medical information is supplied to the movement control parameter setting unit 33.

  On the other hand, the control circuit of the movement control parameter setting unit 33 uses the movement control information stored in advance in its own storage circuit based on information such as age, sex, and failure degree of the subject 150 supplied from the system control unit 34. select. Then, based on the selected movement control information, the movement control parameters for obtaining the raising / lowering stroke, the raising / lowering speed and the raising / lowering acceleration of the top plate 15 suitable for the safe movement mode are set (step S4 in FIG. 8). The control parameter is temporarily stored in the storage circuit of the system control unit 34.

  Next, the operator inputs an instruction signal for raising and lowering the top board 15 to a predetermined angle using the top board raising lever 321 provided on the operation panel of the input unit 32 (step S5 in FIG. 8). . The system control unit 34 that has received this instruction signal causes the top 15 to rise and fall at a predetermined start speed and start acceleration within a predetermined start stroke based on the above-described movement control parameters stored in its own storage circuit. The movement control signal is generated (step S6 in FIG. 8) and supplied to the mechanism driving unit 164 in the moving mechanism unit 16 of the X-ray TV bed 1.

  And the mechanism drive part 164 supplies a drive signal to the top-plate raising / lowering mechanism 163 according to the above-mentioned movement control signal, and raises / lowers the top-plate 15 (step S7 of FIG. 8).

  Then, when the subject 150 is set at a desired imaging position by raising and lowering the top board 15, the operator inputs an imaging start command at the input unit 32, and receives the imaging start command. 34 comprehensively controls each unit of the X-ray diagnostic apparatus 100 to start X-ray imaging (step S8 in FIG. 8).

  When the X-ray imaging at the first imaging position is completed, the above-described steps S5 to S8 are repeated, and X-ray imaging is performed at imaging positions set for a plurality of tilt angles. (Steps S5 to S8 in FIG. 8).

(Modification)
Next, a modification of the present embodiment will be described with reference to FIG. The feature of this modification is a so-called bolus DSA () that enables X-ray imaging of the tip (front edge) of the contrast medium by moving the imaging system along the flow of the contrast medium administered to the lower limb blood vessels or the like. In digital subtraction angiography) and bolus DA (digital angiography), the moving speed of the imaging system is controlled based on medical information and subject information of the subject 150.

  FIG. 9 is a diagram for explaining the bolus DSA. Mask image data (image data before administration of contrast medium) and contrast image data (image data before administration of contrast medium) when obtaining a subtraction image before and after contrast medium administration in the femoral artery of the subject 150 are illustrated. The imaging position and imaging sequence of image data after contrast medium administration are shown. However, both the mask image data and the contrast image data in FIG. 9 are taken in the direction from the heel portion to the foot end portion (X1 → XN) in the imaging system (X-ray generator 11 and X-ray detector 12). Although the mask image data is captured while moving sequentially, the imaging system may be captured by moving the imaging system in the direction from the foot end to the hook portion (XN → X1).

  In this bolus DSA, first, the imaging system is moved at a predetermined speed in the direction from the heel portion to the foot end portion with respect to the subject 150, and a mask before contrast medium administration at a plurality of preset imaging positions X1 to XN. Collect and save image data.

  Next, a contrast medium is injected into the subject 150, and contrast image data is collected when the contrast medium reaches the imaging positions X1 to XN. Further, subtraction image data is generated by a subtraction process between the contrast image data and the already stored mask image data. In this case, in order to track the flow (particularly the front edge) of the contrast agent administered to the femoral artery of the subject 150, the imaging system is operated at a moving speed set based on the medical information and subject information of the subject 150.に Move in the direction from the foot to the end of the foot.

  The moving procedure of this imaging system will be described in more detail using the flowchart shown in FIG.

(Moving procedure of imaging system)
The operator of the X-ray diagnostic apparatus 100 first places the subject 150 on the top 15 (step S11 in FIG. 10), and then uses the input unit 32 of the operation unit 3 to perform imaging conditions, display conditions, and X-ray irradiation. Conditions and the like are set, and a safe movement mode is selected using the movement mode selection button 325 (step S12 in FIG. 10).

  Upon receiving this selection signal, the system control unit 34 of the operation unit 3 collects medical information and subject information of the subject 150 from the examination orders supplied in advance from the RIS via the network (step S13 in FIG. 10). ), For example, information such as age and sex in the subject information, examination site or disease name in the medical information is supplied to the movement control parameter setting unit 33.

  On the other hand, the control circuit of the movement control parameter setting unit 33 is a movement stored in advance in its own storage circuit based on information such as age, sex, examination site, and disease name of the subject 150 supplied from the system control unit 34. Control information is selected, and a moving speed of the imaging system suitable for the blood flow speed of the subject 150 is set as a movement control parameter (step S14 in FIG. 10).

  Next, the operator photographs the mask image data at the photographing positions X1 to XN while moving the imaging system from the heel portion toward the foot end portion, and the obtained mask image data is image data generation / storage unit. 4 (step S15 in FIG. 10).

  Next, after the operator administers the contrast agent from the scale portion of the subject 150 (step S16 in FIG. 10), the operator inputs an imaging instruction signal of contrast image data at the input unit 32. Then, the system control unit 34 that has received this instruction signal generates a movement control signal for moving the imaging system at a predetermined speed based on the above-described movement control parameter stored in its own storage circuit, and generates an X-ray TV bed. It supplies to the mechanism drive part 164 in the 1 movement mechanism part 16 (step S17 of FIG. 10).

  Then, the mechanism driving unit 164 supplies a drive signal to the imaging system moving mechanism 161 in accordance with the movement control signal described above, and moves the imaging system from the heel part to the foot end part (step S18 in FIG. 10). When the imaging system reaches a predetermined imaging position (X1 to XN), the system control unit 34 controls each unit of the high voltage generation unit 2 and the X-ray TV bed 1 to collect contrast image data ( Further, the bolus DSA image data is generated by the subtraction process of the obtained contrast image data and the mask image data collected in step S15 (step S20 in FIG. 10).

  According to the embodiment of the present invention described above, when setting the imaging position in X-ray imaging by tilting the top plate on which the subject is placed in a predetermined direction, the top plate tilting stroke, the tilting speed, Since the rising / falling acceleration is set based on the medical information and subject information of the subject, high safety can be ensured for the subject under examination.

  In particular, for elderly subjects and subjects with disabilities, the standing table can be placed in a standing position by setting the top / bottom stroke and speed, and the vertical acceleration to be smaller than those for normal X-ray imaging. The fall from the footrest can be prevented, and the pain of the subject in the reverse inclination can be reduced by reducing the up / down stroke of the top plate.

  In addition, the subject can be reliably fixed on the top plate by setting the top / bottom stroke and the top / bottom speed of the top plate small, so that the imaging is not repeated and the examination efficiency is improved.

  In addition, the top table tilting stroke and tilting speed suitable for the subject are automatically set based on the medical information and subject information of the subject, thereby reducing the burden on the operator. Can do.

  On the other hand, according to the modification of the present embodiment, the suitable moving speed of the imaging system in the bolus DSA or the like is automatically set based on the medical information of the subject and the subject information, thereby reducing the burden on the operator. In addition, the inspection efficiency can be improved.

  As mentioned above, although the Example of this invention has been described, this invention is not limited to the above-mentioned Example, It can change and implement. For example, the case where the erection stroke, the erection speed, and the erection acceleration of the top 15 in the safe movement mode of the above-described embodiment is set based on the medical information and the object information of the subject 150 has been described. Other personal information may be used.

  Further, as described above, the movement accuracy can be improved by controlling the raising / lowering of the top plate 15 by the three movement control parameters of the raising / lowering stroke, the raising / lowering speed, and the raising / lowering acceleration. It may be controlled by one or more of them.

  Furthermore, although the raising / lowering stroke, the raising / lowering speed and the raising / lowering acceleration have been described as the movement control parameters in the movement of the top board 15, the movement of the top board 15 may be controlled by other movement control parameters.

  On the other hand, in the above-described modification, the method of moving the imaging system in bolus DSA imaging has been described, but it can also be applied to so-called bolus DA imaging and other X-ray imaging in which only contrast image data after contrast medium administration is collected. .

  Furthermore, in the above-described embodiments and modifications thereof, the X-ray diagnostic apparatus for the purpose of digestive organ diagnosis has been described. However, an X-ray diagnostic apparatus for the purpose of diagnosing the circulatory organ and other regions may be used. .

The figure which shows schematic structure of the X-ray diagnostic apparatus in the Example of this invention. The block diagram which shows the whole structure of the X-ray diagnostic apparatus in the Example. The figure for demonstrating the top plate and imaging system in the Example, and its moving direction. The figure which shows the position of the top plate and a test object in the standing position, horizontal position, and reverse inclination in the Example. The figure which shows the specific example of the operation panel in the input part of the Example. The figure for demonstrating the raising / lowering stroke in the normal movement mode of the same Example, and the raising / lowering stroke in a safe movement mode. The figure for demonstrating the raising speed and raising acceleration in the normal movement mode of the Example, and the raising speed and raising acceleration in the safe movement mode. The flowchart for demonstrating the raising / lowering procedure of the top plate in the Example. The figure which shows the imaging system moving direction and imaging | photography position of bolus DSA in the modification of the Example. The flowchart for demonstrating the movement procedure of the imaging system in the modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... X-ray TV bed 11 ... X-ray generation part 111 ... X-ray tube 112 ... X-ray restrictor 12 ... X-ray detection part 121 ... X-ray I.D. I.
122 ... Optical system 123 ... X-ray TV camera 124 ... A / D converter 13 ... Holding unit 15 ... Top plate 16 ... Moving mechanism unit 161 ... Imaging system moving mechanism 162 ... Top plate moving mechanism 163 ... Top plate tilting mechanism 164 ... Mechanism drive unit 2 ... High voltage generator 21 ... High voltage generator 22 ... X-ray control unit 3 ... Operation unit 31 ... Display unit 32 ... Input unit 33 ... Move control parameter setting unit 34 ... System control unit 320 ... Operation panel 321 ... Top plate raising / lowering lever 322 ... Shooting start button 323 ... Top plate movement lever 324 ... Aperture adjustment lever 325 ... Movement mode selection button

Claims (7)

X-ray irradiation means for irradiating the subject with X-rays;
X-ray detection means for detecting X-rays transmitted through the subject;
Image data generation means for generating image data based on the X-ray information detected by the X-ray detection means;
A top plate on which the subject is placed;
A top plate tilting means for tilting the top plate,
An X-ray diagnostic apparatus, comprising: a tilt control unit that controls the top plate tilting unit based on personal information of the subject.   An input means for inputting the personal information of the subject is provided, and the raising / lowering control means controls the raising / lowering of the top plate based on the personal information of the subject input from the input means. The X-ray diagnostic apparatus according to claim 1.   The X-ray according to claim 1, wherein the raising / lowering control unit controls at least one of a raising / lowering stroke, a raising / lowering speed, and a raising / lowering acceleration of the top plate based on personal information of the subject. Diagnostic device.   The X-ray diagnostic apparatus according to claim 1, wherein the up / down control unit controls the up / down of the top board based on at least one of medical information and subject information of the subject.   The X-axis according to claim 1, wherein the up-and-down control means controls the up-and-down of the tabletop based on at least one of the age, sex, disorder degree, disease name, and examination site of the subject. Line diagnostic equipment. X-ray irradiation means for irradiating the subject with X-rays;
X-ray detection means for detecting X-rays transmitted through the subject;
Image data generation means for generating image data based on the X-ray information detected by the X-ray detection means;
An imaging system moving means for moving the X-ray generation means and the X-ray detection means along the body axis direction of the subject;
An X-ray diagnostic apparatus comprising movement control means for controlling movement speeds of the X-ray generation means and the X-ray detection means based on personal information of the subject.   The movement control means controls the movement speed of the X-ray generation means and the X-ray detection means based on at least one of the age, sex, disease name, and examination site of the subject. 6. The X-ray diagnostic apparatus according to 6.

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