X-ray image diagnosis apparatus

Patent metadata

Field	Value
Publication number	US-10271804-B2
Application number	US-201615225092-A
Country	US
Kind code	B2
Filing date	Aug 1, 2016
Priority date	Oct 27, 2015
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

According to one embodiment, the X-ray image diagnosis apparatus comprises an X-ray generator, an X-ray restriction unit, a first X-ray detector, a second X-ray detector, and a drive. The X-ray generator generates X-rays to be applied to a subject. The X-ray restriction unit is disposed between the subject and the X-ray generator to restrict X-rays outside an opening region which is formed using a metal plate. The first X-ray detector has a first detection region in which X-rays that pass through the subject are detected. The second X-ray detector has a second detection region which is smaller than the first detection region and which has a high spatial resolution. The drive moves the first and second X-ray detectors so that the second detection region includes an irradiation region of the subject formed by the opening region.

First claim

What is claimed is:

1. An X-ray image diagnosis apparatus, comprising:
an X-ray generator configured to generate X-rays to irradiate a subject;
an X-ray restriction unit which is disposed between the subject and the X-ray generator to form an opening region using a metal plate, and which restricts X-rays outside the opening region among the X-rays;
a first X-ray detector which has a first detection region in which X-rays that pass through the subject are detected;
a second X-ray detector which has a second detection region which is smaller than the first detection region and which has a high spatial resolution; and
a drive configured to move, based on a position of the opening region, the first X-ray detector and the second X-ray detector so that the second detection region includes an irradiation region of the subject formed by the opening region.

2. The X-ray image diagnosis apparatus according to claim 1 , wherein the second X-ray detector is attached in such a manner that the second detection region overlaps the first detection region.

3. The X-ray image diagnosis apparatus according to claim 1 , wherein the second X-ray detector is disposed inside the first X-ray detector, and attached integrally with the first X-ray-detector.

4. The X-ray image diagnosis apparatus according to claim 1 , wherein the X-ray restriction unit is an X-ray diaphragm which shields X-rays outside of the opening region.

5. The X-ray image diagnosis apparatus according to claim 1 , wherein the X-ray restriction unit is a filter which attenuates X-rays outside of the opening region.

6. The X-ray image diagnosis apparatus according to claim 1 , wherein the drive moves the first X-ray detector and the second X-ray detector in such a manner that a center coordinate of the X-ray irradiation region of the subject which is formed by the opening region matches a center coordinate of the second detection region.

7. The X-ray image diagnosis apparatus according to claim 1 , wherein the drive moves the first X-ray detector and the second X-ray detector in such a manner that the moving distance of the second X-ray detector is reduced with respect to the irradiation region of the subject formed by the opening region.

8. The X-ray image diagnosis apparatus according to claim 1 , wherein the movements of the first X-ray detector and the second X-ray detector are executed based on input information from an operator.

9. The X-ray image diagnosis apparatus according to claim 1 , wherein a size of the opening region does not change when the first X-ray detector and the second detection region are moved.

10. An X-ray image diagnosis apparatus, comprising:
an X-ray generator configured to generate X-rays to irradiate a subject;
an X-ray restriction unit which is disposed between the subject and the X-ray generator to form an opening region using a metal plate, and which restricts X-rays outside the opening region among the X-rays;
a first X-ray detector which has a first detection region in which X-rays that pass through the subject are detected;
a second X-ray detector which has a second detection region which is smaller than the first detection region and which has a high spatial resolution; and
a drive configured to move, based on a position of the opening region, the second X-ray detector so that the second detection region includes an irradiation region of the subject formed by the opening region.

11. The X-ray image diagnosis apparatus according to claim 10 , wherein the second X-ray detector is disposed separately from the first X-ray detector and is independently movable from the first X-ray detector.

12. The X-ray image diagnosis apparatus according to claim 10 , wherein the X-ray restriction unit is an X-ray diaphragm which shields X-rays outside of the opening region.

13. The X-ray image diagnosis apparatus according to claim 10 , wherein the X-ray restriction unit is a filter which attenuates X-rays outside of the opening region.

14. The X-ray image diagnosis apparatus according to claim 10 , wherein the drive moves the second X-ray detector in such a manner that a center coordinate of the X-ray irradiation region of the subject which is formed by the opening region matches a center coordinate of the second detection region.

15. The X-ray image diagnosis apparatus according to claim 10 , wherein the drive moves the second X-ray detector in such a manner that the moving distance of the second X-ray detector is reduced with respect to the irradiation region of the subject formed by the opening region.

16. The X-ray image diagnosis apparatus according to claim 10 , wherein the movement of the second X-ray detector is executed based on input information from an operator.

17. The X-ray image diagnosis apparatus according to claim 10 , wherein a size of the opening region does not change when the second detection region is moved.

Assignees

• Toshiba Medical Sys Corp

Inventors

• Ohga Nobuhiro
• Okada Jun
• ESASHI Satoru
• Muroi Toshio
• Ogura Nobuo
• Gunji Masanori
• Hayatsu Yasuto
• Nagae Ryoichi
• Iijima Yoshiaki

Classifications

• A61B6/4441

  the rigid structure being a C-arm or U-arm · CPC title

• A61B6/469

  for selecting a region of interest [ROI] · CPC title

• A61B6/461

  Displaying means of special interest · CPC title

• A61B6/54

  Control of apparatus or devices for radiation diagnosis · CPC title

• A61B6/463

  characterised by displaying multiple images or images and diagnostic data on one display · CPC title