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Abstract #3774

Suppression of artifacts in compressed sensing cine MRI

Shinji Kurokawa 1 , Yoshitaka Bito 2 , and Hisaaki Ochi 1

1 Central Research Laboratory, Hitachi, Ltd., Kokubunji-shi, Tokyo, Japan, 2 Hitachi Medical Corporation, Kashiwa-shi, Chiba, Japan

Coherent ghost artifacts are likely to occur in 2D cine compressed sensing MRI. They are caused by a lack of randomness in sampling patterns and insufficient parallel reconstruction. We propose a novel method that suppresses these artifacts. A new constraint on mean in the time direction is applied to a conventional compressed sensing reconstruction. The method is applicable to general compressed sensing MRI as well as cine MRI. In numerical simulations, artifacts were reduced to 33% in RMSE without temporal blurring. In volunteer scanning, artifacts were suppressed without image degradation.

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