Method and apparatus for processing MR signal, and computer program

1. A method for processing MR signals, the method comprising:

when acquired K-space signals are amplified, assigning a first amplification gain to signals within a first signal region in the K space, and assigning a second amplification gain to signals within a second signal region in the K space, wherein signal intensities of K-space signals in the first signal region are greater than signal intensities of K-space signals in the second signal region, and wherein the first amplification gain is lower than the second amplification gain.

2. The method for processing MR signals of claim 1 , further comprising:

obtaining, through simulation, a maximum signal intensity of the K-space signals acquired when a pre-scanning is performed;

using a ratio of a preset signal intensity of the K-space signals to the maximum signal intensity of the K-space signals as the first amplification gain.

3. The method of claim 1 , wherein the K space is a spherical signal space in which a data acquisition trajectory is a radiation radius with a center of the K space being a starting point, the first signal region is a region in which a distance between a coordinate of any K-space signal and the center of the K space is less than or equal to a specific value, and the second signal region is a region in which a distance between a coordinate of any K-space signal and the center of the K space is greater than the specific value.

4. The method of claim 3 , further comprising:

determining the first signal region and the second signal region according to intensity distribution information of self-induction attenuation signals of the K-space signals on one or more data acquisition trajectory in the K space, wherein the first signal region includes higher signal intensities of the K-space signals than the signal intensities of the K-space signals of the second signal region.

5. A non-transitory computer readable media that stores a program, when executed by a magnetic resonance system, causing the magnetic resonance system to carry out a process comprising:

when acquired K-space signals are amplified, assigning a first amplification gain to signals within a first signal region in the K space, and assigning a second amplification gain to signals within a second signal region in the K space, wherein signal intensities of K-space signals in the first signal region are greater than signal intensities of K-space signals in the second signal region, and wherein the first amplification gain is lower than the second amplification gain.

6. The non-transitory computer readable media of claim 5 , wherein the program further causes the MR scanning system to:

obtain, through simulation, a maximum signal intensity of the K-space signals acquired when a pre-scanning is performed; and

use a ratio of a preset signal intensity of the K-space signals to the maximum signal intensity of the K-space signals as the first amplification gain.

7. The non-transitory computer readable media of claim 5 , wherein the K space is a spherical signal space in which a data acquisition trajectory is a radiation radius with a center of the K space being a starting point, the first signal region is a region in which a distance between a coordinate of any K-space signal and the center of the K space is less than or equal to a specific value, and the second signal region is a region in which a distance between a coordinate of any K-space signal and the center of the K space is greater than the specific value.

8. The non-transitory computer readable media of claim 7 , wherein the program further causes the MR scanning system to:

determine the first signal region and the second signal region according to intensity distribution information of self-induction attenuation signals of the K-space signals on one or more data acquisition trajectory in the K space, wherein the first signal region includes higher signal intensities of the K-space signals than the signal intensities of the K-space signals of the second signal region.

9. An apparatus for processing MR signals, the apparatus comprising:

a processor configured to assign a first amplification gain to signals within a first signal region in a K space and assign a second amplification gain to signals within a second signal region in the K space at the time of amplifying required K-space signals, wherein signal intensities of K-space signals in the first signal region are greater than signal intensities of K-space signals in the second signal region, and wherein the first amplification gain is lower than the second amplification gain.

10. The apparatus of claim 9 , wherein the processor is further configured to obtain a maximum signal intensity of the K-space signals acquired when a pre-scanning is preformed, and to use a ratio of a preset signal intensity of the K-space signals to the maximum signal intensity of the K-space signals as the first amplification gain.

11. The apparatus of claim 9 , wherein the K space is a spherical signal space in which a data acquisition trajectory is a radiation radius with a center of the K space being a starting point, the first signal region includes a region in which a distance between a coordinate of any K-space signal and the center of the K space is less than or equal to a specific value, and the second signal region is a region in which a distance between a coordinate of any K-space signal and the center of the K space is greater than the specific value.

12. The apparatus of claim 11 , wherein the processor is further configured to determine the first signal region and the second signal region according to intensity distribution information of self-induction attenuation signals of the K-space signals on one or more data acquisition trajectory in the K space, wherein the first signal region includes higher signal intensities of the K-space signals than the signal intensities of the K-space signals of the second signal region.