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x-ray imaging device

A photographing device and X-ray technology, applied in the fields of radiological diagnostic equipment, medical science, diagnosis, etc., can solve the problem that the X-ray irradiation area cannot be detected with good accuracy

Active Publication Date: 2021-05-11
HITACHI HEALTHCARE MFG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For this reason, if the side of the X-ray irradiation area is not correctly grasped whether it is located on the anode side or the cathode side, it may not be possible to detect the X-ray irradiation area with high accuracy.

Method used

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Experimental program
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no. 1 Embodiment approach

[0048] Specifically, such as figure 1 As shown, the X-ray imaging device according to the first embodiment of the present invention includes: an X-ray source 11, an X-ray diaphragm 12, an X-ray detector 13, a rotation mechanism 14, an image processing unit 1, a system control unit 2, and monitor3. The X-ray imaging device can capture both X-ray fluoroscopic images and X-ray imaging images (still images).

[0049] The X-ray source 11 includes an X-ray tube that generates X-rays, and irradiates the subject with the X-rays generated in the X-ray tube. The X-ray tube is rotationally driven by the X-ray tube rotating mechanism 10 as required. The X-ray aperture 12 limits the X-ray irradiation area irradiated to the subject P from the X-ray source 11 . The X-ray detector 13 detects the X-rays irradiated through the X-ray aperture 3 and transmitted through the subject P, and outputs an electric signal corresponding to the amount of the transmitted X-rays to the image processing u...

no. 2 Embodiment approach

[0075] In the X-ray imaging apparatus according to the first embodiment described above, the position of the cathode on the X-ray image is determined based on information contained in the system information storage unit such as installation information and rotation information. In the present embodiment, the position of the cathode for each shot is determined based on the acquired X-ray images. Since the configuration of the X-ray imaging device and the processing other than the judgment of the cathode position are the same as those of the above-mentioned first embodiment, description is omitted, and the following follows: Figure 7 The flow chart of is an illustration of the cathode position determination process for determining the cathode position by image processing.

[0076] In step S71, the irradiated region detection unit 23 takes in the X-ray image generated by the image processing unit 20 and stored in the image storage unit 21, and proceeds to step S72. In the next ...

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Abstract

The present invention provides an X-ray imaging device. The side located on the cathode side among the four sides of the X-ray irradiated area is also accurately detected, and the X-ray irradiated area is accurately detected. An X-ray imaging device is provided, comprising: an X-ray source having an X-ray tube for irradiating an object with X-rays; an X-ray aperture for limiting an X-ray irradiation area irradiated from the X-ray source to the object; An X-ray detector that irradiates and transmits X-rays of the subject through the X-ray aperture; an image processing unit that generates an X-ray image based on an electrical signal output from the X-ray detector; a cathode detection unit that detects cathode position information of a side located on the cathode side of the X-ray tube among four sides of the X-ray irradiation area in the generated X-ray image; and based on the cathode position obtained by the cathode detection unit An irradiation area detection unit that detects an X-ray irradiation area in the X-ray image based on the information.

Description

technical field [0001] The present invention relates to an X-ray imaging device, which uses an X-ray aperture to set an irradiation area of ​​X-rays irradiated from an X-ray source, and uses a detector to detect X-rays passing through an area corresponding to the set irradiation area, thereby obtaining to visualize. Background technique [0002] In the past, an X-ray imaging device is known, which reduces the scattered rays of X-rays in addition to reducing the radiation of the unnecessary imaging area, thereby improving the image quality. The X-ray aperture that narrows the irradiation range of the irradiated X-rays. In such an X-ray imaging device, position information of the X-ray aperture is obtained using a position detector or the like, and an area corresponding to the opening of the X-ray aperture is imaged. [0003] For example, Patent Document 1 discloses an X-ray image diagnostic apparatus in which an X-ray aperture position detector specifies an X-ray aperture a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/00
CPCA61B6/5205
Inventor 竹之内忍向吉涉尾园弘和柳田隼二瓶光代
Owner HITACHI HEALTHCARE MFG LTD