Imaging systems and methods

1. A method implemented on a computing device having at least one processor and at least one storage device, the method comprising:

obtaining image data of a subject to be scanned by a medical device;

determining a scan range of the subject based on the image data, wherein the scan range includes a plurality of scan areas of the subject;

setting scan parameters of the plurality of scan areas of the subject with different sets of parameter values; and

performing, by the medical device, an imaging on the plurality of scan areas based on the different sets of parameter values of scan parameters in one scan.

2. The method of claim 1 , wherein the image data of the subject is obtained by an image capturing device or the medical device.

3. The method of claim 1 , wherein the determining a scan range of the subject based on the image data comprises:

identifying the plurality of scan areas of the subject based on the image data of the subject using an identification model; and

determining the scan range of the subject based on the plurality of scan areas of the subject.

4. The method of claim 1 , wherein the determining a scan range of the subject based on the image data comprises:

obtaining element information associated with at least one element of the image data;

identifying the plurality of scan areas of the subject based on the element information; and

determining the scan range of the subject based on the plurality of scan areas of the subject.

5. The method of claim 1 , wherein the setting scan parameters of the plurality of scan areas of the subject with different sets of parameter values comprises:

for each scan area of the plurality of scan areas,

obtaining a relationship between the scan area and at least one scan parameter of the scan area; and

determining at least one parameter value of the at least one scan parameter based on the scan area and the relationship.

6. The method of claim 1 , further comprising:

identifying at least one feature point in the image data;

determining a target position of the subject based on the at least one feature point; and

causing the medical device to move the subject to the target position.

7. The method of claim 1 , further comprising:

generating an image of the subject based on the scan of the subject by the medical device; and

adjusting the parameter values of the scan parameters based on the image.

8. The method of claim 1 , further comprising:

determining a plurality of reconstruction parameters corresponding to the plurality of scan areas of the subject; and

generating an image of the subject based on the scan of the subject by the medical device and the plurality of reconstruction parameters.

9. The method of claim 8 , wherein

the scan of the subject is a computed tomography (CT) scan or a magnetic resonance imaging (MRI) scan,

the image of the subject is a CT image or an MRI image, and

the method further comprises:

obtaining PET scan data by performing, based on the scan range, a PET scan of the subject using a PET device; and

performing an attenuation correction on the PET scan data based on the CT image or the MRI image.

10. The method of claim 1 , further comprising:

determining posture information of the subject based on the image data;

applying the posture information to a scan protocol of the subject.

11. The method of claim 10 , wherein the applying the posture information to a scan protocol of the subject comprises:

obtaining the scan protocol of the subject; and

determining whether the scan protocol includes preset posture information.

12. The method of claim 11 , further comprising:

in response to determining that the scan protocol does not include the preset posture information, storing the posture information in the scan protocol.

13. The method of claim 11 , further comprising:

in response to determining that the scan protocol includes the preset posture information, updating the preset posture information based on the posture information.

14. The method of claim 10 , further comprising:

causing a voice processing device to transmit the posture information to a user; or

causing a terminal device to display the posture information to the user.

15. The method of claim 14 , wherein the determining posture information of the subject based on the image data comprises:

obtaining, via the terminal device or the voice processing device, an input relating to the posture information of the subject from the user; and

updating the posture information of the subject based on the input.

16. The method of claim 15 , wherein the updating the posture information of the subject based on the input comprises:

comparing the posture information of the subject and the input of the user to generate a comparison result; and

updating the posture information of the subject based on the comparison result.

17. A method implemented on a computing device having at least one processor and at least one storage device, the method comprising:

obtaining image data of a subject to be scanned by a medical device;

determining posture information of the subject based on the image data; and

applying the posture information to a scan protocol of the subject by:

obtaining the scan protocol of the subject;

determining whether the scan protocol includes preset posture information; and

in response to determining that the scan protocol does not include the preset posture information, storing the posture information in the scan protocol, or in response to determining that the scan protocol includes the preset posture information, updating the preset posture information based on the posture information.

18. The method of claim 17 , further comprising:

causing a voice processing device to transmit the posture information to a user; or

causing a terminal device to display the posture information to the user.

19. The method of claim 18 , wherein the determining posture information of the subject based on the image data comprises:

obtaining, via the terminal device or the voice processing device, an input relating to the posture information of the subject from the user; and

updating the posture information of the subject based on the input.

20. A system, comprising:

at least one storage device storing a set of instructions; and

at least one processor in communication with the at least one storage device, when executing the stored set of instructions, the at least one processor causes the system to perform operations including:

obtaining image data of a subject to be scanned by a medical device;

determining a scan range of the subject based on the image data, wherein the scan range includes a plurality of scan areas of the subject;

setting scan parameters of the plurality of scan areas of the subject with different sets of parameter values; and

performing, by the medical device, an imaging on the plurality of scan areas based on the different sets of parameter values of scan parameters in one scan.