JP2004298473A - X-rays image photographing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-ray image photographing system which can improve photographing efficiency by corresponding to various photographing modes. <P>SOLUTION: An X-ray tube 2 for irradiating a subject H with X-rays is supported by an X-ray tube supporting mechanism in such a manner that it can move in the top and bottom direction and in the first cross direction, and also it can rotate around the second cross direction which is perpendicular to the first cross direction. The X-ray detector 10 having an X-ray detection surface 10a along the second cross direction is supported by an X-ray detector supporting mechanism through a stand 11a, in such a manner that it can move in a top and bottom direction and the first cross direction, and also it can rotate around the second cross direction. The X-ray detector 10 and stand 11a are juxtaposed to stand in a row along the second cross direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a medical X-ray imaging system.
[0002]
[Prior art]
A conventional X-ray imaging system 101 shown in FIG. 10 includes an X-ray tube 103 for irradiating an object 102 with X-rays, and a X-ray tube 103 in a vertical direction and a first horizontal direction (the direction of arrow A in the figure). The X-ray tube support mechanism 104, which is movable in a horizontal direction and is rotatable around a second lateral direction (perpendicular to the paper) perpendicular to the first lateral direction, and an X-ray detection surface 105a facing the first lateral direction. A first X-ray detector 105 having a first X-ray detector 105, a first X-ray detector support mechanism 106 having a stand 106a for supporting the first X-ray detector 105 movably in the vertical direction on the side opposite to the X-ray detection surface 105a, And a second X-ray detector 108 disposed in a space below the table 107 and having an X-ray detection surface 108a facing upward (see Patent Document 1).
[0003]
By irradiating the first X-ray detector 105 with X-rays from the X-ray tube 103 at the position indicated by the alternate long and short dash line in the drawing, an upright imaging of the subject 102 located between the X-ray tube 103 and the first X-ray detector 105 By performing X-ray irradiation from the X-ray tube 103 at the solid line position on the second X-ray detector 108 in the figure, the subject 102 on the supine imaging table 107 can be imaged in a recumbent position.
[0004]
[Patent Document 1]
JP-A-11-155850 [0005]
[Problems to be solved by the invention]
When imaging the subject 102 between the X-ray tube 103 and the first X-ray detector 105 in the conventional system, the first X-ray detector 105 and the stand 106a are arranged in parallel in the first lateral direction. The shooting mode is restricted. For example, even if an attempt is made to irradiate the chest of a patient sitting in a wheelchair as the subject 102 by irradiating X-rays from the back side, the conventional system cannot perform imaging because interference occurs between the stand 106a and the wheelchair. In addition, the provision of the second X-ray detector 108 for the recumbent imaging as well as the first X-ray detector 105 for the upright imaging is hindered from providing an inexpensive system.
An object of the present invention is to provide an X-ray imaging system capable of solving the above problems.
[0006]
[Means for Solving the Problems]
An X-ray imaging system according to the present invention includes: an X-ray tube that irradiates an object with X-rays; and an X-ray tube that is movable vertically and in a first lateral direction and is perpendicular to the first lateral direction. An X-ray tube supporting mechanism that supports the second X-ray tube so as to be rotatable around the second horizontal direction; an X-ray detector having an X-ray detection surface along the second horizontal direction; An X-ray detector support mechanism having a stand that supports the first lateral direction and that can pivot around the second lateral direction, wherein the X-ray detector and the stand are connected to the second lateral direction. It is characterized by being arranged in parallel along the direction.
According to the present invention, the X-ray detection surface of the X-ray detector extends along the second lateral direction, and the X-ray detector and the stand are arranged in parallel along the second lateral direction. Accordingly, the subject arranged between the X-ray tube and the X-ray detector during imaging does not line up with the stand along the first lateral direction, so that the restriction on the imaging mode can be reduced.
[0007]
In the present invention, a supine position table is provided below which a space is ensured, and the X-ray detector is arranged in the space below the supine position table by moving in the first lateral direction. It is preferable that the position can be changed between a position to be moved and a position distant from the lying position photographing table in the first lateral direction.
This eliminates the need for a dedicated X-ray detector for supine imaging.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
In an X-ray imaging system 1 shown in FIG. 1, an X-ray tube 2 for irradiating an object with X-rays is moved in an up-down direction and a first lateral direction (arrow A direction in the figure) by an X-ray tube support mechanism 3. It is supported so as to be capable of turning around a second lateral direction (direction of arrow B in the figure) perpendicular to the first lateral direction. The X-ray tube support mechanism 3 of the present invention includes a moving body 5 supported by a rail 4 provided on a ceiling of a system installation room so as to be movable in a first lateral direction, and a vertically expandable and contractable attached to the moving body 5. Column 6 and an arm 7 attached to the lower end of the column 6, the X-ray tube 2 is attached to the arm 7 so as to be pivotable about a second lateral direction, and the moving body 5 is moved in the first lateral direction. , An X-ray tube drive mechanism for driving the column 6 to expand and contract and drive the X-ray tube 2 to rotate around the second lateral direction is built in, and the drive mechanism itself can adopt a known configuration.
[0009]
Further, the X-ray imaging system 1 moves the X-ray detector 10 having the X-ray detection surface 10a along the second horizontal direction by the columnar stand 11a of the X-ray detector support mechanism 11 in the vertical and first horizontal directions. Movably in the direction and pivotably supported about the second lateral direction. The X-ray detector 10 of the present embodiment is a flat panel type, and the X-ray detection surface 10a is a flat surface. The X-ray detector 10 and the stand 11a are arranged so as to be parallel in the second lateral direction. The stand 11a is supported movably in a first lateral direction by a rail 12 provided on the floor of the system installation room. An arm 14 projecting from the stand 11a in the second lateral direction is attached to a movable member 13 attached to the stand 11a so as to be movable up and down so as to be pivotable about a pivot shaft 14a along the second lateral direction. The X-ray detector 10 is attached so as to rotate together with the X-ray detector. As a result, the X-ray detector 10 is cantilevered from the side by the stand 11a via the arm 14. The X-ray detector support mechanism 11 drives the stand 11a in the first lateral direction, drives the moving member 13 in the vertical direction, and drives the arm 14 to pivot around the second lateral direction. Is built in the stand 11a, and the drive mechanism itself can adopt a known configuration.
[0010]
Further, the X-ray imaging system 1 includes a recumbent imaging table 20 in which a space is secured below. By moving the X-ray detector 10 in the first lateral direction, the X-ray detector 10 is disposed at a position separated from the table 20 in the first lateral direction as shown in FIG. 2 and in a space below the table 20 as shown in FIG. The position can be changed between the positions.
[0011]
A control device (not shown) for the X-ray tube driving mechanism and the X-ray detector driving mechanism is provided, and the control thereof controls the positioning of the X-ray tube 2 in the vertical direction, the first lateral direction, and the second lateral direction. Positioning control of the X-ray detector 10 in the vertical direction, the first horizontal direction, and the second horizontal direction, and the interlocking control of the X-ray tube 2 and the X-ray detector 10 are enabled.
[0012]
According to the X-ray imaging system 1, as shown in FIG. 2, the X-ray detector 10 is disposed at a position separated from the table 20 in the first horizontal direction with the X-ray detection surface 10a facing sideways. By irradiating X-rays from 2 in the first lateral direction, it is possible to image the subject H in a standing state between the X-ray detector 10 and the X-ray tube 2 as shown in FIG. At this time, the subject H is moved by controlling the X-ray tube driving mechanism and the X-ray detector driving mechanism so that the X-ray tube 2 and the X-ray detector 10 are vertically linked while maintaining the relative position. The photographing position can be adjusted and photographing can be performed at a plurality of upper and lower positions without increasing the photographing efficiency. From this state, the X-ray tube 2 and the X-ray detector 10 are moved in the first lateral direction and turned around the second lateral direction, and as shown in FIG. Is arranged with the X-ray detection surface 10a facing upward, and X-rays are radiated downward from the X-ray tube 2, so that the subject in the lying position on the table 20 can be imaged. At this time, by controlling the X-ray tube driving mechanism and the X-ray detector driving mechanism so that the X-ray tube 2 and the X-ray detector 10 are interlocked in the first lateral direction while maintaining the relative positions, the subject By adjusting the shooting position without moving H, shooting can be performed at a plurality of positions in the first horizontal direction, and shooting efficiency can be improved. Further, as shown in FIG. 5, the X-ray detector 10 is rotated in one direction around the second lateral direction (the direction of arrow C in the figure) and the X-ray detector 10 is moved in one direction along the first lateral direction ( By moving the X-ray tube driving mechanism and the X-ray detector driving mechanism so that the center of the X-ray beam emitted from the X-ray tube 2 passes through a predetermined position, the X-ray is moved in the direction of arrow A 'in the figure). The tomographic imaging of the subject H can be performed without mechanically linking the X-ray detector 10 with the X-ray detector 2.
[0013]
According to the above embodiment, the X-ray detection surface 10a extends along the second lateral direction, and the X-ray detector 10 and the stand 11a are arranged in parallel along the second lateral direction. Accordingly, the subject H arranged between the X-ray tube 2 and the X-ray detector 10 during imaging does not line up with the stand 11a along the first lateral direction, so that the restriction on the imaging mode can be reduced. . For example, as shown in FIG. 6, when the chest of the subject H sitting in the wheelchair is imaged by irradiating the backside with X-rays, interference between the stand 11a and the wheelchair does not occur. In addition, by using the X-ray detector 10 as a table, a part of the subject H can be placed. For example, as shown in FIG. 7, the feet of the subject H sitting in a wheelchair are placed on the X-ray detection surface 10a. The lower limb can be photographed by placing the subject H on the X-ray detection surface 10a, or by placing the leg of the subject H sitting on a chair as shown in FIG. 8, or the hand or arm of the subject H as shown in FIG. Is placed on the X-ray detection surface 10a, so that the upper limb can be imaged. Further, since the X-ray detector 10 can be changed in position between a position arranged in the space below the table 20 and a position distant from the table 20 in the first lateral direction, a dedicated X-ray for the supine position imaging is provided. No line detector is required.
[0014]
The present invention is not limited to the above embodiment. For example, the X-ray detector may be supported by an X-ray detector support mechanism so as to be rotatable around a normal line at a substantially central position of the X-ray detection surface as a central axis.
[0015]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the X-ray imaging system of this invention, imaging efficiency can be improved by responding to various imaging modes, and furthermore, it provides inexpensively by performing standing imaging and lying imaging with a single X-ray detector. it can.
[Brief description of the drawings]
FIG. 1 is a perspective view of an X-ray image capturing system according to an embodiment of the present invention; FIG. 2 is a perspective view of a main part of the X-ray image capturing system according to the embodiment of the present invention when standing upright; FIG. 4 is a perspective view of a main part of the X-ray image capturing system according to the embodiment when the patient is in the recumbent position. FIG. 4 is a diagram showing a standing position capturing state by the X-ray image capturing system according to the embodiment of the present invention. FIG. 6 is a diagram showing a tomographic imaging state by the X-ray imaging system of the embodiment. FIG. 6 is a diagram showing a chest imaging state by the X-ray imaging system of the embodiment of the present invention. FIG. 7 is an X-ray image of the embodiment of the present invention. FIG. 8 is a view showing a foot imaging state by an imaging system. FIG. 8 is a view showing a leg imaging state by an X-ray imaging system of an embodiment of the present invention. FIG. 9 is an upper limb by an X-ray imaging system of an embodiment of the present invention. FIG. 10 is a diagram showing an imaging state of a conventional X-ray imaging system. Figure Description of the sign] indicating the
2 X-ray tube 4 Rail 5 Moving body 6 Column 7 Arm 10 X-ray detector 10a X-ray detecting surface 11a Stand 12 Rail 13 Moving member 14 Arm 20 Table H for recumbent imaging

Claims (2)

An X-ray tube that irradiates the subject with X-rays;
An X-ray tube support mechanism that supports the X-ray tube so as to be movable vertically and in a first lateral direction and to be pivotable about a second lateral direction perpendicular to the first lateral direction;
An X-ray detector having an X-ray detection surface along the second lateral direction;
An X-ray detector support mechanism having a stand that supports the X-ray detector so as to be movable in the vertical direction and the first lateral direction and to be pivotable about the second lateral direction,
The X-ray imaging system, wherein the X-ray detector and the stand are arranged so as to be arranged in parallel along the second lateral direction. It is equipped with a supine position table below which space is secured,
The X-ray detector is moved in the first lateral direction, and is separated from the position arranged in the space below the supine imaging table in the first lateral direction from the supine imaging table. The X-ray imaging system according to claim 1, wherein the position can be changed between the position and the position.

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