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Abstract #4571

T2-Weighted Foetal Brain MRI: Utilising Slice-To-Volume Reconstruction to Reduce Repeat Acquisition Due to Fetal Motion

Elaine Felicity Green1, Emer Hughes1, Kathleen Colford1, Louise Dillon1, Joanna Allsop1, Laura McCabe1, Suzanne Hiscocks1, Lara Waite1, Anthony Price1, Jana Hutter1, Laurence Jackson1, Maria Murgasova-Kuklisova1, Joseph V Hajnal1, and Mary A Rutherford1
1Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, Kings College London, London, United Kingdom

Single-shot turbo spin echo T2 (SSTSE) is a common sequence used in fetal brain MRI. It is typically acquired in stacks that are positioned according to fetal brain anatomy, producing images that are radiologically in-plane; axial, sagittal, and coronal. However, fetal motion can cause images to be out-of-plane and repeats are often necessary to rectify this. This study proposes a new, optimised method that acquires stacks in planes set to maternal anatomy, rather than fetal brain. We then utilise slice-volume reconstruction to re-register the volume to standard radiological planes.

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