JPH11118736A - Apparatus and method for x-ray diagnosis - Google Patents

Abstract

PROBLEM TO BE SOLVED: To pick up images in conformity with a size, a shape, a thickness in an X-ray transmission direction, structural precision, etc., of a device or container to be diagnosed, by setting a plurality of X-ray generation apparatuses a the like of different X-ray generation focal points in a manner to be switchable. SOLUTION: Two or more X-ray generation apparatuses of different X-ray generation focal points are set in a manner to be switchable. For instance, an X-ray generation apparatus 8 and a microfocus X-ray generation apparatus 10 are loaded on a moving stage 11 together with a CCD camera 9, and the moving stage 11 loaded on a Y-directional moving stage 12 can be moved in a Y direction by a ball thereby 13. An object to be inspected is set to a sample holder 2, a position of which is confirmed by the CCD camera 9. The X-ray generation apparatus 8 or microfocus X-ray generation apparatus 10 is switched to be used in accordance with a precision state of a diagnosis part of the object to be diagnosed. The X-ray generation focal point can thus be changed. Alternatively, an X-ray detection medium can be changed in accordance with the precision state of the diagnosis part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an X-ray diagnostic apparatus comprising an X-ray generator and an X-ray detector, and an X-ray diagnostic method using the same.

[0002]

2. Description of the Related Art When non-destructively diagnosing the inside of a device, a container or the like, it is general to make a diagnosis using an X-ray fluoroscopic image. Further, the X-ray generator is a separate device because of the difference in the output X-ray tube voltage between the normal millimeter-order focus and the micro-order focus. Further, as the X-ray detection medium, a conventional X-ray film, X-ray image intensifier, imaging plate, or semiconductor type directly receiving X-rays has been present as a separate device.

[0003]

In diagnosis using X-ray radiography, X-ray imaging is performed based on the size and shape of the target device or container, the substantial thickness in the X-ray transmission direction, the precision of the structure, and the like. I was shooting under different conditions. recent years,
Techniques have been established that make it easier to digitally diagnose X-ray fluoroscopic images using image processing techniques after imaging, but there is a limit to this, and even if the same inspection target is used, one X-ray diagnostic apparatus can be used. It is not possible to diagnose every part with.

The present invention has been made in view of the foregoing points, and has been made in consideration of the size and shape of the target device or container, the thickness in the X-ray transmission direction,
An object of the present invention is to provide an integrated X-ray diagnostic apparatus and an X-ray diagnostic method that enable imaging in accordance with the precision of the structure and the like.

[0005]

According to the present invention, there is provided the following X
The technical problem described above is solved by the X-ray diagnostic apparatus and the X-ray diagnostic method.

[0006] When diagnosing the internal state by irradiating X-rays to equipment and containers, etc., depending on the precise state of the part to be diagnosed,
An X-ray diagnostic apparatus characterized in that the X-ray focus can be changed.

[0007] When diagnosing the internal state by irradiating X-rays to equipment and containers, etc., depending on the precise state of the part to be diagnosed,
An X-ray diagnostic apparatus characterized in that the focus of X-ray generation can be changed, and the X-ray detection medium can be changed according to its precise state.

[0008] When diagnosing the internal state by irradiating X-rays to equipment and containers, etc., X-rays depend on the precise state of the part to be diagnosed.
When the image is taken while changing the focal point of X-ray generation and the X-ray detection medium, the whole X-ray fluoroscopic image of the apparatus and the container, etc.
An X-ray diagnostic apparatus comprising a device for displaying or recording an enlarged fluoroscopic image and an externally visible image in association with each other.

[0009] Depending on the precise state of the part to be diagnosed, imaging is performed by changing the focus of X-ray generation and the X-ray detection medium, the results are recorded in association with each other, and two or more related images are displayed on the same screen. A characteristic X-ray diagnostic method.

As described above, the present invention is characterized in that the focus of the stepped X-ray generation is changed and the X-ray generation is performed in an integrated manner.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show the overall configuration of an X-ray diagnostic apparatus which has been integrated in one embodiment of the present invention. In the figure, 1 is a sample holder, 2 is a sample rotating table, 3 is a sample X direction moving table, 4 is a sample Y direction moving table, 5 is a ball screw (for Y direction moving), 6 is a sample Z direction moving table, and 7 is a sample Z direction moving table. Ball screw (for moving in Z direction), 8 is X-ray generator, 9 is CC
D camera, 10 is a microfocus X-ray generator, 1
Reference numeral 1 denotes a moving table for the X-ray generator 8, CCD camera 9 and microfocus X-ray generator 10, 12 denotes a Y-direction moving table for the X-ray generator 8, etc., 13 denotes a ball screw (for moving in the Y direction), and 14 denotes a support. Pillar, 15 is a drive motor, 16 is an X-ray detector, 17 is a CCD camera, 18 is an X-ray image intensifier, 19 is an imaging plate holder (before imaging), 20 is an imaging plate moving and holding guide,
21 is an imaging plate holder (after imaging), 22 is a Z-direction movable base of the X-ray detector 16, and 23 is a ball screw (Z
, A drive motor, 26 a ball screw (for X-direction movement), 27 a drive motor, 28 a sample rotation gear, and 29 a drive motor.

The X-ray generator 8 and the microfocus X-ray generator 10 are provided together with a CCD camera 9 and a moving table 10.
The moving table 10 is mounted on a Y-direction moving table 12. The movable table 12 can be moved in the Y direction by a ball screw. An inspection object such as a device or a container is set in the sample holder 2, and the position of the inspection object is confirmed by the CCD camera 9. The image at the time of confirmation is displayed on the monitor 43.

When diagnosing the internal state by irradiating the inspection object with X-rays, the X-ray generator 8 or the micro-focus line generator 10 is switched and used depending on the precise state of the part to be diagnosed. Thereby, the focus of X-ray generation can be changed. Since both X-ray generators are mounted on the movable base 10 and upgraded, the imaging conditions other than the focus change are constant.

The X-ray detector 16 is mounted on an X-ray detector Z-direction movable table 22, whose position is confirmed by a CCD camera 17, and is movable in the Z-direction by a ball screw 23 and a drive motor 24. Thus, the X-ray detection medium can be changed depending on the precise state of the part to be diagnosed.

A sample holder 1 and a sample rotating table 2 on which the sample holder 1 is mounted can be moved in the X, Y, and Z directions by a sample X direction moving table 3, a sample Y direction moving table 4, and a sample Z direction moving table 6. The sample holder 1 can be further moved in the rotation direction by the action of the sample rotating table 2.

FIG. 3 shows an X-ray image intensifier detection surface 30 when an X-ray image intensifier is photographed using an X-ray detection device. FIGS. 4A and 4B are diagrams showing imaging plate imaging using an X-ray detection apparatus, wherein FIG. 4A shows a front view and FIG. 4B shows a plan view. 31 indicates an imaging plate, 35 indicates a state before imaging of the imaging plate, and 36 indicates a state after imaging of the imaging plate. 32 is an X-ray fluorescence intensifier, and 33 is a CC
D camera is shown, and 34 is a shielding plate for protecting the imaging plate.

FIG. 5 shows a control device for an X-ray diagnostic apparatus and an apparatus for processing and recording imaging information.

Reference numeral 37 denotes a movement / rotation control device for an X-ray diagnostic apparatus; 38, an image processing device; 39, a recording device; 40, an arithmetic processing unit (CPU); 41, a switching device; A monitor for viewing the focused X-ray fluoroscopy and the visible image; 43, a monitor for viewing the visible image;
44 is a control device of the microfocus X-ray generator, 4
Reference numeral 5 denotes a control device of the X-ray generator, and 46 denotes an imaging plate reading / display / recording device.

The movement / rotation control device of the X-ray diagnostic device is an X-ray diagnostic device.
X-ray generator (including microfocus X-ray generator)
The movement and rotation of the X-ray detection device and the sample turntable 2 are controlled.

The photographing information of the X-ray generator and the X-ray detector is input to an image processing device and subjected to image processing. The image-processed information is recorded in the recording device 39, and is output from the arithmetic unit (CPU) and is displayed on the monitor 42.

The imaging information from the X-ray generator is output to the image processing device 38 by the switching device 41 or to the monitor 43. Therefore, the monitor 42 is for viewing X-ray fluoroscopy, microfocus X-ray fluoroscopy, and a visible image, and the monitor 43 is for viewing a visible image.

The controller 44 of the microfocus X-ray generator controls the microfocus X-ray generator 10, and the controller 45 of the X-ray generator controls the X-ray generator 8. Information on the imaging plate is read, displayed, and recorded by the imaging plate reading / display / recording device 46.

Next, a control method will be described.

The inspection object set on the sample turntable 2 is C
The position is confirmed by the CD cameras 9 and 17, and the image at that time is displayed on the monitor 43. X-ray generator 8 and X
X-ray image intensifier 18 of X-ray detector 16
Thus, an X-ray fluoroscopic image of the inspection object is acquired. The acquired image is displayed on the monitor 42 as an X-ray fluoroscopic image 47 as shown in FIG. Here, the area cursor 48 on the monitor is moved to an arbitrary position on the monitor, and a portion where the precise part is desired to be further detailed is determined.

The sample moving tables 3, 4, and 6 on which the object to be inspected is mounted are moved in the horizontal and vertical directions in conjunction with the area cursor 48, and the center of the area is centered on the X-ray irradiation of the X-ray generator 8. Move the object to be inspected. Then X-ray generator Y
The direction moving table 12 is moved in the vertical direction, and the center of the microfocus X-ray generator 10 is aligned with the center of the X-ray generator 8. At this time, the horizontal position of the microfocus X-ray generator and the object to be inspected are automatically adjusted so as to be in focus. In this state, imaging is performed using microfocus X-rays, and imaging information is subjected to image processing. An image 49 obtained through X-ray fluoroscopy by the microfocus X-ray generator 10 is an image obtained by high-resolution enlargement as shown in FIG. (C) As shown in the figure, the image 50 corresponding to the image 47 is displayed on the left half of the monitor, and the microfocus X-ray image of the attention area 51 of the image 50, that is, the image 52 corresponding to the image 49 is displayed on the right half. The display allows the two to be compared. Further, an image 53 corresponding to the image 50 is placed on the upper left half of the monitor 42 and a microfocus X-ray image 5
By displaying 2 in the right half and displaying the visible image 55 in the lower left half, the three cars can be compared, and observation can be performed closely.

FIGS. 1 to 3 show a detailed photograph.
As shown in (1), imaging plates 31 and 35 are used. The imaging plate is held in the imaging plate holder 19 before imaging, and at the time of imaging,
The imaging plate is automatically set at the detection position by remote control, and is automatically stocked in the imaging holder 21 after photographing. The imaged imaging plate is processed by the imaging plate reading / displaying / recording device 46.

[0028]

Since the X-ray diagnostic apparatus used in the present invention is a single integrated apparatus, when diagnosing the internal state by irradiating an apparatus or a container with X-rays, the precision of the part to be diagnosed is high. The focus of X-ray generation can be easily changed depending on the state, and precise inspection and diagnosis can be performed.

In recording a transmission image, a high-resolution enlarged image can be displayed on one motor in association with an X-ray fluoroscopic image and a visible image, so that a higher-level diagnosis can be performed.

[Brief description of the drawings]

FIG. 1 is an elevation view showing a configuration of an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a state diagram of the X-ray detection device during X-ray imaging intensifier imaging.

4 is a state diagram at the time of photographing in FIG. 3, (a) is an elevation view,
(B) is a plan view.

FIG. 5 is a block diagram of an embodiment of the present invention.

FIGS. 6A and 6B are diagrams showing image planes, wherein FIG. 6A is an X-ray fluoroscopic image, FIG. 6B is a microfocus X-ray fluoroscopic image,
FIG. 3C is a comparison diagram of the X-ray fluoroscopic image diagram and the microfocus X-ray fluoroscopic image diagram, and FIG. 4D is a comparison diagram in which a visible image is further added to the diagram of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... sample holder, 2 ... sample rotating table, 3 ... sample X direction moving table, 4 ... sample Y direction moving table, 6 ... sample Z direction moving table,
8 X-ray generator, 9 CCD camera, 10 microfocus X-ray generator, 11 movable table, 12 X-ray generator Y-direction movable table, 16 X-ray detector, 17 CC
D camera, 18 ... X-ray image intensifier, 1
9: imaging plate holder, 20: imaging plate moving / holding guide, 21: imaging plate holder, 22: X-ray detector Z-direction movable table, 25: housing,
30 ... X-ray image intensifier detection surface, 31 ...
Imaging plate, 32 ... X-ray fluorescence intensifier, 33 ...
CCD camera, 34: shielding plate for protecting the imaging plate, 35: imaging plate, 36: imaging plate, 37: movement / rotation control device for X-ray diagnostic device, 38: image processing device, 39 recording device, 40: arithmetic device (CPU) ), 42 monitor, 43 monitor, 44 microfocus X-ray generator control device, 45 X-ray generator control device, 46 imaging plate reading / display / recording device.

Claims (4)

[Claims] An X-ray diagnostic apparatus comprising: an X-ray generator and an X-ray detector for irradiating an apparatus or a container with X-rays and measuring an internal state thereof; An X-ray diagnostic apparatus characterized in that an X-ray generator is installed so as to be switchable. 2. The X-ray diagnostic apparatus according to claim 1, wherein two or more X-ray detectors having different X-ray detection media are installed so as to be switchable. 3. An X-ray diagnostic apparatus comprising an X-ray generator and an X-ray detector for irradiating an apparatus or a container with X-rays and measuring the internal state thereof, wherein two or more X-rays having different focuses are generated. An X-ray generator is provided, two or more X-ray detectors having different X-ray detection media are provided, and two of the related whole X-ray fluoroscopic image, partially enlarged X-ray fluoroscopic image, and visible external image are provided. An X-ray diagnostic apparatus comprising an image display device for displaying the above. 4. An X-ray diagnostic method for irradiating an apparatus or a container with X-rays and diagnosing an internal state of the apparatus, wherein the focus of X-ray generation and the X-ray detection medium are changed according to the precise state of the part to be diagnosed. An X-ray diagnostic method, comprising: capturing an image, recording the result in association with each other, and displaying two or more related images on the same screen.