Adaptive bulk motion exclusion for improved robustness of abdominal magnetic resonance imaging.

ABSTRACT: Non-Cartesian magnetic resonance imaging (MRI) sequences have shown great promise for abdominal examination during free breathing, but break down in the presence of bulk patient motion (i.e. voluntary or involuntary patient movement resulting in translation, rotation or elastic deformations of the body). This work describes a data-consistency-driven image stabilization technique that detects and excludes bulk movements during data acquisition. Bulk motion is identified from changes in the signal intensity distribution across different elements of a multi-channel receive coil array. A short free induction decay signal is acquired after excitation and used as a measure to determine alterations in the load distribution. The technique has been implemented on a clinical MR scanner and evaluated

SUBMITTER: Stemkens B 

PROVIDER: S-EPMC5643254 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature