JP2009060953A - X-ray diagnostic system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-ray diagnostic system that determines the optimum X-ray fluoroscopic direction in a short time. <P>SOLUTION: In an X-ray diagnostic system 1, an operator turns a three-dimensional image displayed on a three-dimensional monitor 15 by operating an operation part 21. A display control part 12 outputs to a drive control part 9 the information of the angle of three-dimensional image displayed on the three-dimensional monitor 15, and the drive control part 9 drives and moves a holding arm 6A to the X-ray irradiation angle in compliance with this information of angle. Accordingly, the operator can adjust the holding arm 6A to the optimum direction where fewer vessels overlap only by turning the three-dimensional image shown on the monitor 15. As a result, the operator can determine the optimum X-ray fluoroscopic direction in a short time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an X-ray diagnostic apparatus that performs diagnosis using a three-dimensional image of a subject, and more particularly to a technique for determining an imaging position using a displayed three-dimensional image.

  For example, when performing catheter treatment on a complicated lesion in a blood vessel such as the head, the surgeon grasps the three-dimensional structure of the blood vessel using a three-dimensional image of the blood vessel image of the subject obtained in advance. The catheter is advanced to the lesioned part while viewing the fluoroscopic image of the blood vessel image of the subject obtained by X-ray fluoroscopic examination of the subject. When obtaining such a three-dimensional image of a blood vessel image or a fluoroscopic image of a blood vessel image, a C-arm mounted X-ray diagnostic apparatus in which an X-ray tube and an X-ray detector are arranged to face each other is used.

Conventionally, as an apparatus of this type, a C-arm and a top plate on which a subject is placed are x, y for the purpose of aligning a lesion found on a three-dimensional image of the subject with the isocenter of the X-ray diagnostic apparatus. There is an X-ray diagnostic apparatus including a drive control unit that drives in the z direction (see, for example, Patent Document 1). According to such a conventional apparatus, since the isocenter of the X-ray diagnostic apparatus can be matched with the lesioned part on the three-dimensional image, a fluoroscopic image of the blood vessel image around the lesioned part can be easily obtained.
JP 2002-136507 A (page 3 to page 4, FIG. 2 to FIG. 6)

However, the conventional example having such a configuration has the following problems.
That is, when seeing through a complex blood vessel such as the brain, blood vessels that are not intended are often overlapped and displayed, so it is necessary to re-perspectively view the blood vessels in a direction where there is little overlap between the blood vessels. In this case, when using the conventional apparatus, the operator searches for a direction in which the blood vessels overlap with each other while rotating the three-dimensional image, finds the optimum direction, and then rotates the C-arm in that direction. As described above, the conventional apparatus requires time for searching for the optimum direction in the three-dimensional image and time for rotating the C-arm in that direction, so that the treatment time is increased accordingly. As a result, the X-ray irradiation time becomes longer and the amount of contrast medium used increases, so the burden on the subject increases. Similarly, the burden on the surgeon also increases.

  This invention is made in view of such a situation, and it aims at providing the X-ray diagnostic apparatus which can determine an optimal X-ray fluoroscopy direction in a short time.

In order to achieve such an object, the present invention has the following configuration.
That is, the invention according to claim 1 is a first X-ray irradiation unit that irradiates a subject with X-rays, and a first X-ray detection unit that detects an X-ray transmitted through the subject and outputs an X-ray detection signal. A first holding means for holding the X-ray irradiation means and the X-ray detection means in a state of being opposed to each other, a first rotation driving means for rotating the holding means around the subject, Drive control means for controlling the rotational drive of the first rotation drive means, and two-dimensional image display means for displaying a two-dimensional X-ray image acquired by an X-ray detection signal detected from the first X-ray detection means. An X-ray diagnostic apparatus, a three-dimensional image storage means for storing a three-dimensional image acquired by irradiating a subject with X-rays from different angles and angle information corresponding to the plurality of angles, and the tertiary 3D image by associating the original image with the angle information Display control means for displaying on the display screen; and rotation operation means for rotating the 3D image on the 3D image display screen, wherein the display control means corresponds to the angle corresponding to the 3D image after the rotation operation. Information is output to the drive control means, and the drive control means rotationally drives the first rotation drive means based on the output angle information.

  [Operation / Effect] According to the invention described in claim 1, the three-dimensional image acquired by irradiating the subject with X-rays from a plurality of different angles together with angle information corresponding to the plurality of angles irradiated with the X-rays. It is stored in the three-dimensional image storage means and displayed on the three-dimensional image display screen in association with the angle information by the display control means. The three-dimensional image can be rotated on the three-dimensional image display screen by operating the rotation operation means. When the rotation operation unit is operated, angle information corresponding to the three-dimensional image after the rotation operation is given to the display control unit, and the display control unit displays the three-dimensional image corresponding to the angle information on the three-dimensional image display screen. . At this time, the display control means outputs this angle information to the drive control means, and the drive control means drives and controls the first drive means based on the inputted angle information to rotationally drive the first holding means. The first X-ray irradiation means irradiates the subject with X-rays from the angle at which the first holding means rotates, and the two-dimensional X-ray image obtained from the X-ray detection signal detected by the first X-ray detection means is a two-dimensional X-ray. It is displayed on the image display means.

  In this way, the first holding means can be rotated by simply rotating the 3D image displayed on the 3D image display means on the display screen, so that the optimum X-ray fluoroscopic direction can be determined in a short time. . As a result, the X-ray irradiation time and the amount of contrast medium used are reduced, so that the burden on the subject and the operator can be reduced.

  In this invention, the second X-ray irradiation means for irradiating the subject with X-rays, the second X-ray detection means for detecting the X-rays transmitted through the subject and outputting an X-ray detection signal, and the second X-ray irradiation A second holding means for holding the first X-ray detection means and the second X-ray detection means facing each other, and a second rotation driving means for rotating the second holding means around the subject. Preferably, the drive control means rotationally drives the second holding means in conjunction with the rotational driving of the first holding means (the invention according to claim 2). As a result, the first holding means and the second holding means can be rotationally driven simply by rotating the three-dimensional image displayed on the image display means, so that two sets of X-ray irradiation means and X-ray detection means are provided. Even in the X-ray diagnostic apparatus, the optimum X-ray fluoroscopic direction can be determined in a short time. As a result, the X-ray irradiation time and the amount of contrast medium used are reduced, so that the burden on the subject and the operator can be reduced.

  In the present invention, it is preferable that the three-dimensional image reconstruction means displays at least two three-dimensional images at different angles on the image display means (the invention according to claim 3). As a result, a three-dimensional image with a different angle is displayed on the image display means, so that the optimum X-ray fluoroscopic direction can be determined in a shorter time. As a result, the X-ray irradiation time and the amount of contrast medium used are reduced, so that the burden on the subject and the operator can be reduced.

  According to the X-ray diagnostic apparatus according to the present invention, since the optimum X-ray fluoroscopic direction can be determined in a short time, the entire treatment time can be shortened. As a result, the X-ray irradiation time and the amount of contrast medium used are reduced, so that the burden on the subject and the operator can be reduced.

  Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating an overall configuration of the X-ray diagnostic apparatus according to the first embodiment, and FIG. 2 is a schematic diagram illustrating a display screen of the X-ray diagnostic apparatus according to the first embodiment.

  As shown in FIG. 1, the X-ray diagnostic apparatus 1 according to the first embodiment includes an X-ray tube 3 </ b> A that irradiates a subject M placed on a top 2 and X-rays that pass through the subject M. A flat panel X-ray detector 5A (hereinafter referred to as FPD 5A), a rotational drive unit 7A that rotationally drives the X-ray tube 3A and the FPD 5A facing each other with the subject M interposed therebetween, and a rotational drive unit A drive control unit 9 that controls the rotational drive of 7A, a data acquisition unit 11 that acquires projection data from an X-ray detection signal output from the FPD 5A, and a three-dimensional image that is regenerated from the projection data output from the data acquisition unit 11 The 3D image reconstruction unit 13 to be configured, the 3D image memory 14 for storing the 3D image created by the 3D image reconstruction unit 13, and the 3D image created by the 3D image reconstruction unit 13 A three-dimensional monitor 15 for displayIn addition, a perspective monitor 16 that displays projection data output from the data acquisition unit 11 as an X-ray fluoroscopic image is provided.

  The X-ray tube 3A has an X-ray imaging function for irradiating X-rays intermittently according to a pulsed X-ray irradiation signal and an X-ray fluoroscopic function. The X-ray tube 3A corresponds to the first X-ray irradiation means of the present invention.

  In the FPD 5A, a large number of small semiconductor detection elements (corresponding to pixels) that directly generate an electrical signal corresponding to the incident X-ray intensity are arranged in a two-dimensional matrix on a flat panel. An image signal is obtained by sequentially scanning each element on the matrix and reading the signal. The FPD 5A reads charges accumulated according to the amount of incident X-rays via a TFT switch, and performs scanning to read accumulated charges by sequentially turning on the TFT switches for each element. The accumulated charge is cleared when reading is finished. The FPD 5A corresponds to the first X-ray detection means of this invention.

  The X-ray tube 3A and the FPD 5A are arranged near both ends of the holding arm 6A, and the X-ray irradiation port of the X-ray tube 3A and the X-ray incident surface of the FPD 5A face each other. The holding arm 6 </ b> A is rotatably provided on the column 4 arranged on the extension line in the longitudinal direction of the top plate 2. The holding arm 6A is rotated in the direction of the arrow RA by a driving force of a rotation driving unit 7A such as an electric motor. The rotation drive unit 7A drives the holding arm 6A according to the drive control signal from the drive control unit 9. The drive control signal is generated in synchronization with the X-ray irradiation signal. The holding arm 6A corresponds to the first holding means of the present invention, the rotation drive unit 7A corresponds to the first rotation driving means of the present invention, and the drive control unit 9 corresponds to the drive control means of the present invention.

  When acquiring a three-dimensional image, the data acquisition unit 11 acquires an X-ray detection signal read by the FPD 5 </ b> A as projection data at each X-ray irradiation angle, and outputs the projection data to the three-dimensional reconstruction unit 13. In addition, the data acquisition unit 11 acquires angle information of each projection data, and outputs the angle information together with the projection data to the three-dimensional reconstruction unit 13. This angle information corresponds to the X-ray irradiation angle from which each projection data was obtained. The 3D image reconstruction unit 13 reconstructs a 3D image from the projection data and the angle information. The reconstructed 3D image is stored in the 3D image memory 14 together with angle information corresponding to each X-ray irradiation angle. The stored three-dimensional image and angle information are appropriately read out by the display control means 12 and displayed on the three-dimensional monitor 15. The data acquisition unit 11 corresponds to the data acquisition unit of the present invention, the display control unit 12 corresponds to the display control unit of the present invention, the 3D image memory 14 corresponds to the 3D image storage unit of the present invention, The three-dimensional monitor 15 corresponds to the three-dimensional image display screen of the present invention.

  The data acquisition unit 11 outputs projection data to the fluoroscopic monitor 16 when acquiring a fluoroscopic image. The fluoroscopic monitor 16 corresponds to the two-dimensional image display means of this invention.

  The display control unit 14 outputs angle information corresponding to the three-dimensional image displayed on the three-dimensional monitor 15 to the drive control unit 9. The drive control unit 9 rotates the holding arm 6A to the X-ray irradiation angle corresponding to this angle information.

  The operation unit 21 is an input unit such as a mouse 28, a trackball 27, or a joystick. In the case where the three-dimensional image displayed on the three-dimensional monitor 15 is rotated on the display screen by the operation unit 21, the trackball 27 will be described as an example. When the surgeon rotates the trackball 27, the display control unit 12 A three-dimensional image appropriately rotated according to the rotation direction and the rotation amount of the ball 27 is displayed on the three-dimensional monitor 15. The rotation operation unit 21 corresponds to the rotation operation means of the present invention.

  As will be described later, when the holding arm 6 </ b> A is rotated to the angle of the three-dimensional image displayed on the monitor 15 by the operation unit 21, the display controller 12 controls the drive controller 9 by operating the operation unit 21. Output angle information. The rotation angle of the holding arm 6A is detected by an angle detector 10 such as a rotary encoder provided in the rotation drive unit 7A and output to the drive control unit 9. The drive control unit 9 compares the angle instructed from the display control unit 12 with the angle of the holding arm 6A, and moves the rotation driving unit 7A until the angle of the holding arm 6A reaches the angle instructed from the display control unit 12. Drive.

  An operation of rotating the holding arm 6A to the angle of the three-dimensional image displayed on the three-dimensional monitor 15 in the X-ray diagnostic apparatus 1 according to the first embodiment will be described. FIG. 2A is a schematic diagram showing a part of the display screen of the three-dimensional monitor 15 before the operation, and FIG. 2B is a schematic diagram showing a part of the display screen of the monitor 15 after the operation.

  As shown in FIGS. 2A and 2B, the three-dimensional monitor 15 displays a three-dimensional image 23 of the cerebral blood vessel of the subject M. Here, the three-dimensional image 23 includes projection data (mask image) of each X-ray irradiation angle obtained by rotating the subject M before administration of the contrast agent, and the subject M after administration of the contrast agent. It is an image obtained by performing subtraction processing on projection data (live image) having the same X-ray irradiation angle obtained by rotating imaging, and then reconstructing a three-dimensional cerebral blood vessel image obtained by subtraction.

 As shown in FIG. 2A, the three-dimensional image 23 displayed on the three-dimensional monitor 15 is an image obtained when the three-dimensional image of the cerebral blood vessel of the subject M is viewed from the front of the head. On the upper part of the three-dimensional monitor 15, angle information of each three-dimensional image 23 is displayed. Here, the angle when the X-ray tube 3A irradiates the front of the head of the subject M with X-rays is 0 degree, the angle when the X-ray tube 3A rotates in the right hand direction of the subject M is a positive angle, The angle when the X-ray tube 3B rotates in the left-hand direction of the subject M and irradiates X-rays is defined as a negative angle. In FIG. 2A, the angle information of the three-dimensional image 23 is 0 degree. The angle of the three-dimensional image 23 displayed on the three-dimensional monitor 15 corresponds to the X-ray irradiation angle of the holding arm 6A. Therefore, when the head of the subject M is seen through from the front based on the three-dimensional image 23, the same image as the three-dimensional image 23 is displayed.

  On the three-dimensional monitor 15, a blood vessel a, a blood vessel b, and a blood vessel c are displayed so as to overlap each other. In this state, it is difficult to grasp the positional relationship between blood vessels. In this case, as shown in FIG. 1, the operator operates a trackball 27 provided in the operation unit 21 to rotate the three-dimensional image 23 displayed on the three-dimensional monitor 15 to the left or right.

  On the three-dimensional monitor 15 shown in FIG. 2B, an image when the surgeon rotates the three-dimensional image 23 plus 90 degrees is displayed. Thereby, the positional relationship between the blood vessel a, the blood vessel b, and the blood vessel c can be easily grasped. When the three-dimensional image 23 is fluoroscopically viewed in the plus 90 degree state, the surgeon operates and presses the angle interlock button 25 displayed on the lower part of the three-dimensional monitor 15 by operating the mouse 28 of the operation unit 21 shown in FIG. . As a result, the holding arm 6A rotates plus 90 degrees.

  According to the invention according to the first embodiment, the operator operates the operation unit 21 to rotate the three-dimensional image 23 displayed on the three-dimensional monitor 15, so that an optimal direction with little overlap between blood vessels can be found. it can. When the operator presses the angle interlock button 25 displayed on the three-dimensional monitor 15 with the mouse 28 of the operation unit 21, the display control means 12 causes the angle of the three-dimensional image 23 displayed on the three-dimensional monitor 15. Is output to the drive control unit 9, and the drive control unit 9 rotationally drives the holding arm 6A at an angle of the three-dimensional image 23 displayed on the monitor 15, so that the operator holds the blood vessel in an optimum direction with little overlapping of blood vessels. The arm 6A can be matched. Therefore, since the optimal fluoroscopic direction can be determined in a short time, the entire treatment time can be shortened. As a result, the X-ray irradiation time and the amount of contrast medium used are reduced, so that the burden on the subject and the operator can be reduced.

  Next, Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram illustrating an overall configuration of the X-ray diagnostic apparatus according to the second embodiment, and FIG. 4 is a schematic diagram illustrating a display screen of the X-ray diagnostic apparatus according to the second embodiment. FIG. 5 is a schematic diagram illustrating an angle-linked operation of the X-ray diagnostic apparatus according to the second embodiment.

  The X-ray diagnostic apparatus according to the second embodiment is a so-called biplane X-ray diagnostic apparatus including two sets of X-ray tubes 3A and 3B and X-ray detectors 5A and 5B. Therefore, the description regarding the X-ray tube 3A, PD5A, etc. common to the first embodiment is omitted, and the characteristic part of the second embodiment will be described. Of the constituent elements shown in FIG. 3 or FIG. 4, constituent elements that are the same as those in FIG. 1 or FIG. The subject M is displayed with a dotted line for convenience of illustration.

  As shown in FIG. 3, the X-ray tube 3 </ b> B and the FPD 5 </ b> B are attached to one end and the other end of a holding arm 6 </ b> B supported by a slide support portion 19 provided on the ceiling. The holding arm 6B slides and rotates in the direction of the arrow RB by the power of the rotation drive unit 7B provided in the slide support unit 19. A center line 31 connecting the X-ray tube 3A and the FPD 5A and a center line 32 connecting the X-ray tube 3B and the FPD 5B intersect at the center point O. The center point O is an imaging center called an isocenter, and maintains the same position no matter how the holding arm 6A and the holding arm 6B are rotated. Hereinafter, the position of the holding arm 6A will be referred to as the front side (F side), and the position of the holding arm 6B will be referred to as the side surface side (L side). In the X-ray diagnostic apparatus 1 of Example 2, since the center line 31 and the center line 32 are orthogonal, it can be said that the L-side holding arm 6B is located at a position shifted by 90 degrees with respect to the F-side holding arm 6A. The X-ray tube 3B, the FPD 5B, the holding arm 6B, and the rotation driving unit 7B correspond to the second X-ray irradiation means, the second X-ray detection means, the second holding means, and the second rotation driving means of this invention.

  As shown in FIG. 3 and FIG. 5 to be described later, a characteristic point in the overall configuration of the second embodiment is that the drive control unit 9 drives the holding arm 6B in conjunction with the driving of the holding arm 6A.

  As shown in FIG. 4, the three-dimensional monitor 15 displays a three-dimensional image 23A viewed from the F side and a three-dimensional image 23B viewed from the L side. The three-dimensional image 23A is a three-dimensional image when the three-dimensional image 23A is viewed from the front of the head of the subject M, and the three-dimensional image 23B is a plus 90 from the front of the head of the subject M. It is a three-dimensional image when viewed with a shift. The three-dimensional image 23A and the three-dimensional image 23B correspond to a planar image when the three-dimensional image 23 shown in the first embodiment is viewed from the F side and the L side. The three-dimensional image 23B has the same angle as the three-dimensional image 23 shown in FIG.

  At this time, since the surgeon can observe the three-dimensional cerebral blood vessel image at a time from two angles on the three-dimensional monitor 15, the blood vessel a is one blood vessel, and the blood vessels b and c are one. You can see that it is a blood vessel at once. Therefore, when the surgeon presses the angle interlock button 25 displayed on the lower part of the three-dimensional monitor 15 with the mouse 28, the holding arm 6A rotates 90 degrees in the right direction. The holding arm 6B is interlocked with an angle shifted by 90 degrees from the holding arm 6A.

  This angle interlock will be described with reference to FIG. As shown in FIG. 5A, the X-ray tube 3A provided in the F-side holding arm 6A and the X-ray tube 3B provided in the L-side holding arm 6B are normally positioned at 0 degree and plus 90 degrees. X-ray fluoroscopy is performed with respect to the subject M. When the surgeon presses the degree angle interlock button 25 to the angle of the three-dimensional image 23B displayed on the monitor 15, the X-ray tube 3A and the FPD 5A shown in FIG. 5 (a) rotate clockwise around the center point O. To do. At this time, as shown in FIG. 5B, the X-ray tube 3B and the FPD 5B are interlocked with the X-ray tube 3A and the FPD 5B while maintaining a deviation of 90 degrees. Therefore, as shown in FIG. 5C, when the X-ray tube 3B reaches a position of plus 90 degrees, the X-ray tube 3B reaches an angle shifted by 90 degrees from the X-ray tube 3A, that is, a position of 180 degrees. .

  According to the invention according to the second embodiment, the operator can observe the 3D image 23A viewed from the F side and the 3D image 23B viewed from the L side displayed on the 3D monitor 15 at a time. It is possible to find an optimal direction with little overlap between blood vessels. When the surgeon presses the angle interlock button 25 displayed on the three-dimensional monitor 15 with the mouse 28 of the operation unit 21, the display control unit 12 drives the angles of the three-dimensional images 23A and 23B displayed on the three-dimensional monitor 15. Since the drive arm 9A is driven to rotate at the angle of the three-dimensional images 23A and 23B displayed on the three-dimensional monitor 15, the surgeon can rotate the holding arm 6A in an optimal direction with little overlapping of blood vessels. The holding arm 6 </ b> A can be adjusted to the above. Therefore, even in the biplane X-ray diagnostic apparatus, the optimum X-ray fluoroscopic direction can be determined in a short time, and therefore the entire treatment time can be shortened. As a result, the X-ray irradiation time and the amount of contrast medium used are reduced, so that the burden on the subject and the operator can be reduced.

  The present invention is not limited to the above-described embodiment, and can be modified as follows.

  (1) In each of the embodiments described above, the FPD 5 has been described as an example of the X-ray detector. However, the X-ray detector may be an image intensifier instead of the FPD.

  (2) In each embodiment described above, the three-dimensional image 23 is displayed on the monitor 15, but a fluoroscopic image obtained by X-ray fluoroscopy may be displayed together with the three-dimensional image 23.

  (3) In each of the embodiments described above, an example in which one or two three-dimensional images 23 are displayed on the monitor 15 has been described. However, three or more three-dimensional images 23 viewed from a plurality of different angles. May be displayed.

  (4) In each embodiment described above, the three-dimensional image acquired by the X-ray diagnostic apparatus 1 is displayed on the three-dimensional monitor 15, but the three-dimensional image acquired by another X-ray diagnostic apparatus, X-ray CT apparatus, or the like. An image may be displayed on the three-dimensional monitor 15.

1 is a block diagram illustrating an overall configuration of an X-ray diagnostic apparatus according to Embodiment 1. FIG. (A) (b) is a schematic diagram which shows the display screen of the X-ray diagnostic apparatus which concerns on Example 1. FIG. It is a block diagram which shows the whole structure of the X-ray diagnostic apparatus which concerns on Example 2. FIG. 6 is a schematic diagram illustrating a display screen of an X-ray diagnostic apparatus according to Embodiment 2. FIG. It is a schematic diagram explaining the angle interlocking | linkage operation | movement of the X-ray diagnostic apparatus which concerns on Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... X-ray diagnostic apparatus 6 ... Holding arm 9 ... Drive control part 12 ... Display control part 15 ... Three-dimensional monitor 21 ... Operation part

Claims (3)

  First X-ray irradiation means for irradiating the subject with X-rays, first X-ray detection means for detecting X-rays transmitted through the subject and outputting an X-ray detection signal, the X-ray irradiation means, and the X-rays The first holding means that holds the detection means in a state of being opposed to each other, the first rotation driving means that rotationally drives the holding means around the subject, and the rotational drive of the first rotation driving means are controlled. An X-ray diagnostic apparatus comprising: a drive control unit; and a two-dimensional image display unit that displays a two-dimensional X-ray image acquired by an X-ray detection signal detected from the first X-ray detection unit. A three-dimensional image storage means for storing a three-dimensional image acquired by irradiating the subject with X-rays from an angle and angle information corresponding to the plurality of angles; and a tertiary by associating the three-dimensional image with the angle information Display control means for displaying on original image display screen Rotation operation means for rotating the 3D image on the 3D image display screen, and the display control means outputs the angle information corresponding to the 3D image after the rotation operation to the drive control means. The drive control means rotationally drives the first rotation drive means based on the output angle information.   2. The X-ray diagnostic apparatus according to claim 1, wherein second X-ray irradiation means for irradiating the subject with X-rays and second X-ray detection means for detecting X-rays transmitted through the subject and outputting an X-ray detection signal. A second holding means for holding the second X-ray irradiating means and the second X-ray detecting means facing each other, and a second rotational drive for rotating the second holding means around the subject. And an X-ray diagnostic apparatus characterized in that the drive control means rotationally drives the second holding means in conjunction with the rotational drive of the first holding means.   3. The X-ray diagnostic apparatus according to claim 1, wherein the three-dimensional image reconstruction unit displays at least two three-dimensional images at different angles on the image display unit.

Images