System and method for simultaneous acquisition of contrast dynamics and anatomical images

Patent metadata

Field	Value
Publication number	US-2023329658-A1
Application number	US-202217721697-A
Country	US
Kind code	A1
Filing date	Apr 15, 2022
Priority date	Apr 15, 2022
Publication date	Oct 19, 2023
Grant date	—

Abstract

A system and method are provided for creating both angiographic images of a subject and dynamic images of the subject from imaging data acquired during an imaging acquisition. The method includes operating an imaging system to perform an imaging acquisition by delivering interspersed doses of high doses of the ionizing radiation and low doses of the ionizing radiation, wherein more low doses of the ionizing radiation are delivered than high doses of ionizing radiation during the imaging acquisition to thereby acquire the imaging data with a high frame rate of low dose data and a low frame rate of high dose data. The method also includes generating at least volumetric angiographic images of the subject and dynamic images of the subject from the imaging data.

First claim

1 . A system for acquiring images, the system comprising:
an imaging system configured to acquire images from the subject using ionizing radiation; and a computer system configured to control the imaging system to:
deliver a series of doses of the ionizing radiation to the subject that includes at least a high dose of the ionizing radiation dose and a low dose of the ionizing radiation dose during an imaging session to acquire imaging data;
deliver more low doses of the ionizing radiation than high doses of ionizing radiation during the imaging session to acquire the imaging data to include a high frame rate of low dose data and a low frame rate of high dose data while interspersing the high doses of the ionizing radiation within the low doses of the ionizing radiation; and
generate at least angiographic images of the subject and dynamic images of the subject from the imaging data.

2 . The system of claim 1 wherein computer system is further configured to generate the low dose data to produce the dynamic images showing contrast medium dynamics in the subject and generate the high dose data to produce digital subtraction angiography (DSA) images of the subject.

3 . The system of claim 2 wherein the dynamic images are generated to produce a series of images at 30 frames per second.

4 . The system of claim 2 wherein the DSA images include three-dimensional volumetric images.

5 . The system of claim 1 wherein the computer system is further programmed to acquire the imaging data at 30 frames per second, wherein one of every third, sixth, or tenth frame is acquired using the high dose of ionizing radiation.

6 . The system of claim 1 wherein the computer system is further programmed to adjust one of a voltage, tube current, or pulse width of the ionizing radiation dose to create the high dose and the low dose of the ionizing radiation.

7 . The system of claim 1 wherein the imaging system includes a computed tomography imaging system.

8 . The system of claim 7 wherein the computed tomography system is a c-arm system.

9 . The system of claim 1 wherein the ionizing radiation dose is less than required to produce the at least angiographic images of the subject and dynamic images of the subject from the imaging data using two non-interleaved acquisition processes.

10 . The system of claim 1 wherein the computer system is configured to control the imaging system to vary a balance between the high frame rate of low dose data and the low frame rate of high dose data.

11 . A method for creating both angiographic images of a subject and dynamic images of the subject from imaging data acquired during an imaging acquisition, the method including steps comprising:
operating an imaging system to perform an imaging acquisition by delivering interspersed doses of high doses of the ionizing radiation and low doses of the ionizing radiation, wherein more low doses of the ionizing radiation are delivered than high doses of ionizing radiation during the imaging acquisition to thereby acquire the imaging data with a high frame rate of low dose data and a low frame rate of high dose data; and generating at least volumetric angiographic images of the subject and dynamic images of the subject from the imaging data.

12 . The method of claim 11 further comprising generating the low dose data to produce the dynamic images showing contrast medium dynamics in the subject and generating the high dose data to produce digital subtraction angiography (DSA) images of the subject.

13 . The method of claim 12 further comprising generating the dynamic images to produce a series of images at 30 frames per second.

14 . The method of claim 12 further comprising generating the DSA images as three-dimensional volumetric images.

15 . The method of claim 11 further comprising acquiring the imaging data at 30 frames per second, wherein one of every third, sixth, or tenth frame is acquired using the high dose of ionizing radiation.

16 . The method of claim 11 further comprising adjusting one of a voltage, tube current, or pulse width of the ionizing radiation dose to create the high dose and the low dose of the ionizing radiation.

17 . The method of claim 11 wherein the imaging system includes a computed tomography imaging system.

18 . The method of claim 17 wherein the computed tomography system is a c-arm system.

19 . The method of claim 11 wherein the ionizing radiation dose is less than required to produce the at least angiographic images of the subject and dynamic images of the subject from the imaging data using two non-interleaved acquisition processes.

20 . The method of claim 11 further comprising varying a balance between the high frame rate of low dose data and the low frame rate of high dose data.

Assignees

• Wisconsin Alumni Res Found

Inventors

• Speidel Michael
• Laeseke Paul
• Hoffman Carson
• Whitehead Joseph

Classifications

• A61B6/507

  for determination of haemodynamic parameters, e.g. perfusion CT · CPC title

• A61B6/504 Primary

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

• G06T7/254

  involving subtraction of images · CPC title

• G06T7/0012

  Biomedical image inspection · CPC title

• G16H30/40

  for processing medical images, e.g. editing · CPC title