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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