X-ray diagnostic apparatus and medical-information processing apparatus

Patent metadata

Field	Value
Publication number	US-11596374-B2
Application number	US-202117232281-A
Country	US
Kind code	B2
Filing date	Apr 16, 2021
Priority date	Apr 16, 2020
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

Abstract

An X-ray diagnostic apparatus of an embodiment includes processing circuitry. The processing circuitry determines a concentration of a contrast agent in contrast-enhanced image collection based on first reference information in which a recommended contrast in a contrast-enhanced image is associated with each region of interest to be subject to collection of the contrast-enhanced image, and on second reference information that indicates a relation among a generation condition of an X-ray, a concentration of a contrast agent, and a contrast. The processing circuitry calculates setting information of an injector to inject a contrast agent to the subject based on the determined concentration of a contrast agent.

First claim

What is claimed is:

1. An X-ray diagnostic apparatus, comprising:
processing circuitry configured to
determine, before performing contrast-enhanced imaging, a particular concentration of a contrast agent in a blood vessel included in a contrast-enhanced image to be collected, based on first reference information in which a recommended contrast in a contrast-enhanced image is associated with each region of interest to be subject to collection of the contrast-enhanced image, and on second reference information that indicates a relation among a generation condition of an X-ray, a corresponding concentration of the contrast agent, and a contrast, and
calculate setting information of an injector to inject the contrast agent to the subject based on the determined concentration of the contrast agent.

2. The X-ray diagnostic apparatus according to claim 1 , wherein
the processing circuitry is further configured to determine the particular concentration of the contrast agent in the blood vessel included in the contrast-enhanced image to be collected by acquiring a recommended contrast for the region of interest of the subject from the first reference information, and by acquiring the particular concentration of the contrast agent from the second reference information based on the acquired recommended contrast and a particular generation condition of an X-ray to be irradiated to the subject.

3. The X-ray diagnostic apparatus according to claim 1 , wherein
the first reference information further includes information of a representative blood vessel diameter of each region of interest,
the second reference information includes information indicating a relation among the generation condition of the X-ray, the corresponding concentration of the contrast agent, and the contrast for each blood vessel diameter, and
the processing circuitry is further configured to determine a blood vessel diameter in the region of interest of the subject based on the first reference information, and determine the particular concentration of the contrast agent in the blood vessel included in the contrast-enhance image to be collected based on the second reference information corresponding to the determined blood vessel diameter.

4. The X-ray diagnostic apparatus according to claim 1 , wherein
the first reference information further includes information of a representative body thickness of each region of interest,
the second reference information includes information indicating a relation among the generation condition of the X-ray, the corresponding concentration of the contrast agent, and the contrast for each body thickness, and
the processing circuitry is further configured to determine a body thickness in the region of interest of the subject based on the first reference information, and determine the particular concentration of the contrast agent in the blood vessel included in the contrast-enhance image to be collected based on the second reference information corresponding to the determined body thickness.

5. The X-ray diagnostic apparatus according to claim 1 , wherein
the second reference information includes information indicating a relation among the generation condition of the X-ray, the corresponding concentration of the contrast agent, and the contrast for each blood vessel diameter, and
the processing circuitry is further configured to determine a blood vessel diameter in the region of interest of the subject from a past image of the region of interest of the subject, and determine the particular concentration of the contrast agent in the blood vessel included in the contrast-enhance image to be collected based on the second reference information corresponding to the determined blood vessel diameter.

6. The X-ray diagnostic apparatus according to claim 1 , wherein
the second reference information includes information indicating a relation among the generation condition of the X-ray, the corresponding concentration of the contrast agent, and the contrast for each body thickness, and
the processing circuitry is further configured to determine a body thickness in the region of interest of the subject from a past image of the region of interest of the subject, and determine the particular concentration of the contrast agent in the blood vessel included in the contrast-enhance image to be collected based on the second reference information corresponding to the determined body thickness.

7. The X-ray diagnostic apparatus according to claim 1 , wherein
the setting information calculated by the processing circuitry is at least one of an injection speed of the contrast agent to be injected to the subject and a dilution ratio of the contrast agent.

8. The X-ray diagnostic apparatus according to claim 1 , wherein the processing circuitry is further configured to determine a particular region of interest of the subject based on an imaging protocol of the subject.

9. The X-ray diagnostic apparatus according to claim 1 , wherein the processing circuitry is further configured to determine a particular region of interest of the subject based on a size of a field of view at imaging.

10. The X-ray diagnostic apparatus according to claim 1 , wherein the processing circuitry is further configured to correct the setting information based on a contrast of a past contrast-enhanced image of a particular region of interest of the subject, and on setting information of an injector at collection of the contrast-enhanced image.

11. The X-ray diagnostic apparatus according to claim 1 , wherein the processing circuitry is further configured to correct the setting information based on an artifact included in a past three-dimensional contrast-enhanced image of a particular region of interest of the subject.

12. The X-ray diagnostic apparatus according to claim 1 , wherein the processing circuitry is further configured to cause a display to display the setting information.

13. The X-ray diagnostic apparatus according to claim 1 , wherein the processing circuitry is further configured to transmit the calculated setting information to the injector.

14. The X-ray diagnostic apparatus according to claim 13 , wherein the processing circuitry is further configured to transmit the setting information, which further includes at least one of a total amount of the contrast agent, an injection time, and an injection start timing, to the injector.

15. A medical-information processing apparatus, comprising:
processing circuitry configured to
determine, before performing contrast-enhanced imaging, a particular concentration of a contrast agent in a blood vessel included in a contrast-enhanced image to be collected, based on first reference information in which a recommended contrast in a contrast-enhanced image is associated with each region of interest to be subject to collection of a contrast-enhanced image, and on second reference information that indicates a relation among a generation condition of an X-ray, a concentration of the contrast agent, and a contrast, and
calculate setting information of an injector to inject the contrast agent to the subject based on the determined concentration of the contrast agent.

Assignees

• Canon Medical Systems Corp

Inventors

• Ohashi Shumpei
• Yamagishi Junichi
• Sato Naotaka
• Sakakibara Jun
• Kanno Yusuke
• Waku Toshiya

Classifications

• A61B6/504

  for diagnosis of blood vessels, e.g. by angiography · CPC title

• A61B6/469

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

• A61M5/007

  for contrast media · CPC title

• A61B6/54

  Control of apparatus or devices for radiation diagnosis · CPC title

• A61B6/481 Primary

  involving the use of contrast agents · CPC title