Reduced respiratory motion artefact in constant TR multi-slice MRI of the mouse.

ABSTRACT:

Purpose

Multi-slice scanning in the abdomen and thorax of small animals is compromised by the effects of respiration unless imaging and respiration are synchronised. To avoid the signal modulations that result from respiration motion and a variable TR, blocks of fully relaxed slices are typically acquired during inter-breath periods, at the cost of scan efficiency. This paper reports a conceptually simple yet effective prospective gating acquisition mode for multi-slice scanning in free breathing small animals at any fixed TR of choice with reduced sensitivity to respiratory motion.

Methods

Multi-slice scan modes have been implemented in which each slice has its own specific projection or phase encode loop index counter. When a breath is registered RF pulses continue to be a

SUBMITTER: Kinchesh P 

PROVIDER: S-EPMC6555631 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature