Image correction method, apparatus, device, medium, and product
Patent Information
- Application Number
- CN202611133985.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-29
- Publication Date
- 2026-10-16
AI Technical Summary
在采用多层同时激发技术的场景下，此类伪影会同时影响同一组内多层的相位估计，导致更严重的图像伪影
[0018] The aforementioned image correction method, apparatus, device, medium, and product acquire reference images and planar echo images, and use the reference images to correct the planar echo images, thereby improving the artifact problem of the planar echo images and enhancing their image quality. Furthermore, during the acquisition of the reference images, the acquisition time interval between the first and second reference images at the same scanning plane is within a preset range, determined based on the perturbation sensitivity and magnetization recovery time of the magnetic resonance imaging (MRI) sequence. Because the perturbation sensitivity of the MRI sequence is considered in determining the preset range, the motion offset of the target object in the two reference images at the same scanning plane is relatively small, improving the image correction effect. Additionally, because the magnetization recovery time after excitation is considered in determining the preset range, sufficient time is reserved for radio frequency (RF) signal recovery between two consecutive acquisitions of reference images at the same scanning plane to improve signal recovery. This eliminates the need to reduce the excitation flip angle of the RF equipment in the MRI system, thus avoiding sacrificing the signal-to-weight ratio of the reference images and ultimately improving the image correction effect. It is evident that, based on the preset range, the image correction effect can be improved, thereby further enhancing the image quality of the corrected planar echo image.