Systems and methods for scan preparation

Patent metadata

Field	Value
Publication number	US-11967429-B2
Application number	US-202016997005-A
Country	US
Kind code	B2
Filing date	Aug 19, 2020
Priority date	Aug 19, 2019
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

Systems and methods for scan preparation are provided. The systems may obtain a first parameter set of a subject to be scanned by a medical device acquired before a scan is performed on the subject. The first parameter set may relate to a physiological motion of the subject acquired before the scan is performed on the subject. The systems may predict, based on the first parameter set and an estimation model, a second parameter set of the subject. The second parameter set may relate to the physiological motion of the subject. The systems may determine at least one scan parameter for the scan based at least in part on the second parameter set. The systems may cause the medical device to perform the scan on the subject based on the at least one scan parameter.

First claim

What is claimed is:

1. A system for a scan, comprising:
a medical device configured to perform the scan;
at least one storage device including a set of instructions; and
at least one processor configured to communicate with the at least one storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
obtaining a first parameter set of a subject to be scanned by the medical device acquired before the scan is performed on the subject, the first parameter set relating to a physiological motion of the subject acquired before the scan is performed on the subject, wherein the first parameter set includes a first parameter sub-set acquired when the subject is undergoing a simulated scan, and the simulated scan is performed by simulating a portion of conditions of the scan;
predicting, based on the first parameter set and an estimation model, a second parameter set of the subject, the second parameter set relating to the physiological motion of the subject, the estimation model being a trained machine learning model, wherein the estimation model is generated by a processing including:
obtaining a plurality of first training samples, each of the plurality of first training samples including a first sample parameter set relating to the physiological motion of a sample subject acquired before a sample scan is performed on the sample subject and a second sample parameter set relating to the physiological motion of the sample subject acquired when the sample scan is being performed on the sample subject; and
generating the estimation model by training a first machine learning model using the first plurality of training samples;

determining at least one scan parameter for the scan based at least in part on the second parameter set; and
performing, by the medical device, the scan on the subject based on the at least one scan parameter.

2. The system of claim 1 , wherein the first parameter set further includes a second parameter sub-set acquired when the subject is not undergoing any scan, and the first parameter sub-set is acquired during a first time period and the second parameter sub-set is acquired during a second time period different from the first time period.

3. The system of claim 1 , wherein the predicting, based on the first parameter set and an estimation model, a second parameter set of the subject includes:
predicting the second parameter set of the subject by inputting the first parameter set to the estimation model.

4. The system of claim 1 , wherein the determining at least one scan parameter for the scan based at least in part on the second parameter set includes:
obtaining a recommendation model;
obtaining health information of the subject; and
determining the at least one scan parameter for the scan by inputting the second parameter set and the health information of the subject into the recommendation model.

5. The system of claim 4 , wherein the inputting the second parameter set and the health information of the subject into the recommendation model includes:
preprocessing the health information of the subject; and
inputting the second parameter set and the preprocessed information of the subject into the recommendation model.

6. The system of claim 5 , wherein the preprocessing the health information of the subject includes:
performing a word segmentation operation on the health information of the subject.

7. The system of claim 1 , wherein the at least one processor is further configured to direct the system to perform the operations including:
causing at least a portion of the at least one scan parameter to be presented to a user.

8. The system of claim 7 , wherein
the at least one processor is further configured to direct the system to perform the operations including receiving a user input, and
the causing the medical device to perform the scan on the subject based on the at least one scan parameter includes:
causing the medical device to perform the scan on the subject based on the at least one scan parameter and the user input.

9. The system of claim 8 , wherein the causing the medical device to perform the scan on the subject based on the at least one scan parameter and the user input includes:
adjusting the at least one scan parameter based on the user input; and
causing the medical device to perform the scan on the subject based on the adjusted at least one scan parameter.

10. The system of claim 9 , wherein the at least one processor is further configured to direct the system to perform the operations including:
adjusting the at least one scan parameter until an image generated by the scan performed on the subject based on the adjusted at least one scan parameter satisfies a preset condition.

11. The system of claim 10 , wherein the at least one processor is further configured to direct the system to perform the operations including:
updating a recommendation model based at least in part on the second parameter set, health information of the subject, and the adjusted at least one scan parameter, the recommendation model being configured to determine the at least one scan parameter for the scan.

12. The system of claim 1 , wherein the at least one processor is further configured to direct the system to perform the operations including:
obtaining a third parameter set of the subject acquired when the scan is being performed on the subject;
determining a difference between the third parameter set of the subject and the second parameter set of the subject; and
determining whether to update the estimation model based at least in part on the difference.

13. The system of claim 1 , wherein the scan is associated with a cardiac angiography.

14. The system of claim 1 , wherein
the physiological motion includes cardiac motion of the subject, and
the first parameter set or the second parameter set relates to a heart rate of the subject.

15. The system of claim 1 , wherein the at least one scan parameter includes at least one of a count of cardiac cycles during the scan, a first phase range during the scan, a pitch of the medical device, a second phase range relating to a radiation dose control, exposure time, or a dose range relating to the radiation dose control.

16. The system of claim 4 , wherein the recommendation model is generated by a processing including:
obtaining a plurality of second training samples, each of the plurality of second training samples including a third sample parameter set relating to the physiological motion of a sample subject when a sample scan is being performed on the sample subject, sample health information of the sample subject, and at least one sample scan parameter based on which the sample scan is performed; and
generating the recommendation model by training a second machine learning model using the plurality of second training samples.

17. A method for a scan, implemented on a medical device and a computing device including at least one processor and at least one storage device, the method comprising:
obtaining a first parameter set of a subject to be scanned by the medical device acquired before the scan is performed on the subject, the first parameter set relating to a physiological motion of the subject acquired before the scan is performed on the subject, wherein the first parameter set includes a first parameter sub-set acquired when the subject is undergoing a simulated scan, and the simulated scan is performed by simulating a portion of conditions of the scan;
predicting, based

Assignees

• Shanghai United Imaging Healthcare Co Ltd

Inventors

• Hao Xin
• Bao Yuan

Classifications

• G16H50/20 Primary

  for computer-aided diagnosis, e.g. based on medical expert systems · CPC title

• A61B6/032

  Transmission computed tomography [CT] · CPC title

• A61B6/488

  involving pre-scan acquisition · CPC title

• G06T7/0012

  Biomedical image inspection · CPC title

• G16H50/50

  for simulation or modelling of medical disorders · CPC title