Control method and control system for image scanning, electronic apparatus, and storage medium

1 . A control method for image scanning, comprising:

configuring a monitoring-layer scanning, and obtaining monitoring-layer images;

determining an initial target region in each of the monitoring-layer images, a target part being located in the initial target region;

identifying the target part in the initial target region, and determining a region corresponding to the identified target part to be a region of interest (ROI); and

generating a computed tomography (CT) control parameter based on a CT number of the ROI, and adjusting a trigger time of image scanning according to the CT control parameter;

wherein the initial target region comprises a first initial target region and a second initial target region, the target part comprises a first target part and a second target part, and the ROI comprises a first ROI and a second ROI; and

identifying the target part in the initial target region and determining the region corresponding to the identified target part to be the ROI comprises:

determining a center point of the first initial target region;

extracting similar pixels centered around the center point to identify an edge of the first target part;

determining a region within the edge of the first target part to be the first ROI;

obtaining historical scanned images of different body parts;

marking target parts having an identical time to peak concentration or having an identical flow rate in the historical scanned images to obtain a data set;

inputting the data set into an identification model for target, and training the identification model for target to obtain a preset target identification model;

identifying the second target part in the second initial target region in each of the monitoring-layer images based on the first target part and the preset target identification model; and

determining a region within an edge of the second target part to be the second ROI.

2 . The control method for image scanning according to claim 1 , wherein, before the generating the CT control parameter based on the CT number of the ROI and adjusting the trigger time of image scanning according to the CT control parameter, the control method for image scanning further comprises: setting a preset threshold value of the CT number of the ROI.

3 . The control method for image scanning according to claim 2 , wherein the generating the CT control parameter based on the CT number of the ROI and adjusting the trigger time of image scanning according to the CT control parameter, comprises:

generating the CT control parameter when the CT number of the ROI is within a range related to the preset threshold value, and adjusting the trigger time of image scanning according to the CT control parameter.

4 . The control method for image scanning according to claim 3 , wherein the range related to the preset threshold value is a range, in which CT numbers are greater than or equal to a difference between the preset threshold value and an adjustment value of the preset threshold value, and are less than or equal to a sum of the preset threshold value and the adjustment value of the preset threshold value.

5 . The control method for image scanning according to claim 4 , wherein the adjustment value of the preset threshold value is 5%, 10%, 15%, 20%, or 25% of the preset threshold value.

6 . The control method for image scanning according to claim 3 , wherein:

the preset threshold value comprises a first preset threshold value, and the range related to the preset threshold value comprises a range related to the first preset threshold value.

7 . The control method for image scanning according to claim 6 , wherein the generating the computed tomography control parameter based on the CT number of the ROI and adjusting the trigger time of image scanning according to the CT control parameter, comprises:

generating the CT control parameter if a CT number of the first ROI is within the range related to the first preset threshold value, and adjusting the trigger time of image scanning according to the CT control parameter.

8 . The control method for image scanning according to claim 6 , wherein:

the preset threshold value further comprises a second preset threshold value, and the range related to the preset threshold value further comprises a range related to the second preset threshold value.

9 . The control method for image scanning according to claim 8 , wherein the first preset threshold value is the same as the second preset threshold value.

10 . The control method for image scanning according to claim 9 , wherein the range related to the first preset threshold value is the same as the range related to the second preset threshold value, and a time to peak concentration of contrast medium of the second target part is identical to a time to peak concentration of contrast medium of the first target part.

11 . The control method for image scanning according to claim 8 , wherein the generating the CT control parameter based on the CT number of the ROI and adjusting the trigger time of image scanning according to the CT control parameter, comprises:

generating the CT control parameter if a CT number of the second ROI is within the range related to the second preset threshold value, and adjusting the trigger time of image scanning according to the CT control parameter.

12 . The control method for image scanning according to claim 2 , wherein the setting the preset threshold value of the CT number of the ROI comprises:

determining the preset threshold value of the CT number of the ROI based on a preset-threshold-value proposing model; or

obtaining the preset threshold value of the CT number of the ROI based on medical experience.

13 . The control method for image scanning according to claim 7 , wherein:

the range related to the first preset threshold value is a range, in which CT numbers are greater than or equal to a difference between the first preset threshold value and an adjustment value of the first preset threshold value, and are less than or equal to a sum of the first preset threshold value and the adjustment value of the first preset threshold value; and

the adjustment value of the first preset threshold value is 20% of the first preset threshold value.

14 . The control method for image scanning according to claim 11 , wherein:

the range related to the second preset threshold value is a range, in which CT numbers are greater than or equal to a difference between the second preset threshold value and an adjustment value of the second preset threshold value, and are less than or equal to a sum of the second preset threshold value and the adjustment value of the second preset threshold value; and

the adjustment value of the second preset threshold value is 20% of the second preset threshold value.

15 . The control method for image scanning according to claim 8 , wherein:

the initial target region comprises a plurality of second initial target regions, the target part comprises a plurality of second target parts, the ROI comprises a plurality of second ROIs, the preset threshold value comprises a plurality of second preset threshold values, and the range related to the preset threshold value comprises a plurality of ranges related to the plurality of second preset threshold values, respectively; and

after the determining the region within the edge of the first target part to be the first ROI, the control method for image scanning further comprises:

identifying the plurality of second target parts in the plurality of second initial target regions in each of the monitoring-layer images based on the first target part, and determining the plurality of second ROIs corresponding to the plurality of second target parts, respectively.

16 . The image scanning triggering method according to claim 8 , wherein the generating the CT control parameter based on the CT number of the ROI and adjusting the trigger time of image scanning according to the CT control parameter, comprises:

obtaining the CT number of the first ROI or the CT number of the second ROI; and

increasing a sampling frequency of image when the CT number of the first ROI is within the range related to the first preset threshold value, or when the CT number of the second ROI is within the range related to the second preset threshold value.

17 . An electronic apparatus, comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor, when executing the computer program, executes steps of the control method of claim 1 .

18 . A non-transitory computer-readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, causes the processor to execute steps of:

configuring a monitoring-layer scanning, and obtaining monitoring-layer images;

determining an initial target region in each of the monitoring-layer images, a target part being located in the initial target region;

identifying the target part in the initial target region and determining a region corresponding to the identified target part to be a region of interest (ROI); and

generating a computed tomography (CT) control parameter based on a CT number of the ROI, and adjusting a trigger time of image scanning according to the CT control parameter;

wherein the initial target region comprises a first initial target region and a second initial target region, the target part comprises a first target part and a second target part, and the ROI comprises a first ROI and a second ROI; and

identifying the target part in the initial target region and determining the region corresponding to the identified target part to be the ROI comprises:

determining a center point of the first initial target region;

extracting similar pixels centered around the center point to identify an edge of the first target part;

determining a region within the edge of the first target part to be the first ROI;

obtaining historical scanned images of different body parts;

marking target parts having an identical time to peak concentration or having an identical flow rate in the historical scanned images to obtain a data set;

inputting the data set into an identification model for target, and training the identification model for target to obtain a preset target identification model;

identifying the second target part in the second initial target region in each of the monitoring-layer images based on the first target part and the preset target identification model; and

determining a region within an edge of the second target part to be the second ROI.

19 . A control method for image scanning, comprising:

configuring a monitoring-layer scanning, and obtaining monitoring-layer images;

determining an initial target region in each of the monitoring-layer images, a target part being located in the initial target region;

identifying the target part in the initial target region, and determining a region corresponding to the identified target part to be a region of interest (ROI) and the ROI comprising a first ROI;

setting a preset threshold value of a computed tomography (CT) number of the ROI, and the preset threshold value comprising a first preset threshold value; and

generating a CT control parameter based on the CT number of the ROI, and adjusting a trigger time of image scanning according to the CT control parameter;

wherein generating the CT control parameter based on the CT number of the ROI comprises:

generating the CT control parameter when a CT number of the first ROI is within a range related to the first preset threshold value;

wherein the range related to the first preset threshold value is a range, in which CT numbers are greater than or equal to a difference between the first preset threshold value and an adjustment value of the first preset threshold value, and are less than or equal to a sum of the first preset threshold value and the adjustment value of the first preset threshold value; and

the adjustment value of the first preset threshold value is 20% of the first preset threshold value.