Abstract #2574
Dynamic Reacquisition for Respiratory Gated, Constant TR 2D multi-slice MRI
Paul Kinchesh 1 , Philip D Allen 1 , John S Beech 1 , Emmanouil Fokas 1 , Stuart Gilchrist 1 , Veerle Kersemans 1 , Ruth Muschel 1 , and Sean C Smart 1
1
Department of Oncology, University of
Oxford, Oxford, United Kingdom
Constant T1 weighting is difficult to achieve in 2D
multi-slice MRI when used with respiratory gating or
triggering. Long term averaging and retrospective gating
have been used to ameliorate this, but at the expense of
significantly extended scan time. This report describes
a new technique that enables respiratory-gated 2D
multi-slice MRI to operate at a constant, short TR
(TR<3T1). The method is maximally efficient as data are
acquired throughout the entire respiratory interval, and
are discarded only when motions are present. The method
is compatible with the addition of cardiac triggering
for TR>5T1 and is demonstrated in the mouse abdomen.
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