Distortion correction of diffusion weighted MRI without reverse phase-encoding scans or field-maps.

ABSTRACT: Diffusion magnetic resonance images may suffer from geometric distortions due to susceptibility induced off resonance fields, which cause geometric mismatch with anatomical images and ultimately affect subsequent quantification of microstructural or connectivity indices. State-of-the art diffusion distortion correction methods typically require data acquired with reverse phase encoding directions, resulting in varying magnitudes and orientations of distortion, which allow estimation of an undistorted volume. Alternatively, additional field maps acquisitions can be used along with sequence information to determine warping fields. However, not all imaging protocols include these additional scans and cannot take advantage of state-of-the art distortion correction. To avoid additional acquisit

SUBMITTER: Schilling KG 

PROVIDER: S-EPMC7394453 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature