Motion correction method, device, MR imaging system and storage medium in MR imaging

By using pilot tone signals to detect motion and obtain navigation images for registration in MR imaging, and adjusting the gradient magnetic field, the image artifact problem caused by motion in MR imaging is solved and the imaging quality is improved.

CN115868958BActive Publication Date: 2025-08-19SIEMENS SHENZHEN MAGNETIC RESONANCE
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Patent Information

Application Number
CN202111140555.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-09-28
Publication Date
2025-08-19
Estimated Expiration
2041-09-28

AI Technical Summary

Technical Problem

There is a lack of a general motion correction scheme in existing MR imaging techniques, resulting in serious artifacts in the image.

Method used

By acquiring the reference navigation image before MR data acquisition, the pilot tone signals received by multiple coils detect motion, marking the data when the motion occurs is corrupt data, and the navigation image after the motion is obtained at the end of the motion is registered, the motion correction parameters are obtained, and the gradient magnetic field is adjusted for motion correction.

Benefits of technology

The quality of MR imaging is improved, image artifacts are reduced, and effective correction of motion is achieved.

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Abstract

Disclosed in embodiments of the present invention are a motion correction method, apparatus, MR imaging system, and storage medium for MR imaging. The method comprises: obtaining a reference navigation image before acquiring MR data for a target region of interest; performing motion detection using pilot tone signals received by multiple coils during MR data acquisition for the target region of interest, and marking the MR data acquired when motion occurs as motion-damaged data when motion is detected; acquiring a post-motion navigation image when the pilot tone signal detects the end of the motion; registering the post-motion navigation image with the reference navigation image to obtain motion correction parameters corresponding to the motion; and performing motion correction on the MR data acquisition using the motion correction parameters. The technical solutions in the embodiments of the present invention can improve MR imaging quality.
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