TSE with Average Specific Phase Encoding Ordering for Motion Artifact Suppression
Kholmovski E, Guo J, Parker D, Zhang L
Utah Center for Advanced Imaging Research
A simple method is presented to reduce MR imaging artifact caused by sporadic motion during multi-average acquisition using TSE sequences. The rearrangement of TSE phase encoding (PE) ordering gives each echo train a unique pattern in each average, which makes it possible to detect motion-corrupted echo trains as well as corrupted averages. The corrupted PE views are replaced by corresponding uncorrupted views in the nearest-in-time average. Both phantom and human studies have shown significant suppression of motion artifacts.