Autocorrection in MR imaging: adaptive motion correction without navigator echoes.

Manduca A, McGee KP, Welch EB, Felmlee JP, Grimm RC, Ehman RL
Radiology. 2000 215 (3): 904-9

PMID: 10831720 · DOI:10.1148/radiology.215.3.r00jn19904

A technique for automatic retrospective correction of motion artifacts on magnetic resonance (MR) images was developed that uses only the raw (complex) data from the MR imager and requires no knowledge of patient motion during the acquisition. The algorithm was tested on coronal images of the rotator cuff in a series of 144 patients, and the improvements in image quality were similar to those achieved with navigator echoes. The results demonstrate that autocorrection can significantly reduce motion artifacts in a technically demanding MR imaging application.

MeSH Terms (8)

Algorithms Artifacts Humans Magnetic Resonance Imaging Movement Shoulder Statistics, Nonparametric Time Factors

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