Improvement in diagnostic quality of structural and angiographic MRI of the brain using motion correction with interleaved, volumetric navigators.

ABSTRACT:

Introduction

Subject movements lead to severe artifacts in magnetic resonance (MR) brain imaging. In this study we evaluate the diagnostic image quality in T1-weighted, T2-weighted, and time-of-flight angiographic MR sequences when using a flexible, navigator-based prospective motion correction system (iMOCO).

Methods

Five healthy volunteers were scanned during different movement scenarios with and without (+/-) iMOCO activated. An experienced neuroradiologist graded images for image quality criteria (grey-white-matter discrimination, basal ganglia, and small structure and vessel delineation), and general image quality on a four-grade scale.

Results

In scans with deliberate motion, there was a significant improvement in the image quality with iMOCO compared to the sca

SUBMITTER: Andersen M 

PROVIDER: S-EPMC6524807 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature