Abstract #3686
Simple motion correction strategy reduces respiratory-induced motion artifacts for k-t accelerated CMR perfusion imaging
Wei Huang 1 , Yang Yang 2 , Xiao Chen 2 , and Michael Salerno 1,3
1
Medicine, University of Virginia,
Charlottesville, Virginia, United States,
2
Biomedical
Engineering, University of Virginia, Charlottesville,
Virginia, United States,
3
Radiology,
University of Virginia, Charlottesville, Virginia,
United States
While k-t accelerated CMR perfusion techniques (k-t PCA)
and CS techniques (k-t SLR) enable highly accelerated
acquisition, their image quality is significantly
degraded by respiratory motion which frequently occurs
in clinical studies. Non-rigid motion correction
techniques which are applied iteratively can reduce
motion artifacts, but the repeated application of
spatial interpolation causes blurring. We describe a
technique which derives rigid motion estimates from the
heart region and performs a single linear phase shift of
the acquired k-space data. We demonstrate that this
motion correction strategy greatly improves k-t PCA and
k-t SLR in the setting of respiratory motion.
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