Deformable Slice-to-Volume Registration for Motion Correction of Fetal Body and Placenta MRI.

ABSTRACT: In in-utero MRI, motion correction for fetal body and placenta poses a particular challenge due to the presence of local non-rigid transformations of organs caused by bending and stretching. The existing slice-to-volume registration (SVR) reconstruction methods are widely employed for motion correction of fetal brain that undergoes only rigid transformation. However, for reconstruction of fetal body and placenta, rigid registration cannot resolve the issue of misregistrations due to deformable motion, resulting in degradation of features in the reconstructed volume. We propose a Deformable SVR (DSVR), a novel approach for non-rigid motion correction of fetal MRI based on a hierarchical deformable SVR scheme to allow high resolution reconstruction of the fetal body and placenta. Additionall

SUBMITTER: Uus A 

PROVIDER: S-EPMC7116020 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature