Method for Correcting Respiratory Artefacts in Parallel-Accelerated First-Pass Myocardial Perfusion Imaging
Merlin Fair 1,2 , Peter D Gatehouse 1,2 , Peter Drivas 1 , Francisco Alpendurada 1 , and David N Firmin 1,2
NIHR Cardiovascular BRU, Royal Brompton
Hospital, London, United Kingdom,
Imperial College, London, United Kingdom
A method is presented for the correction of potential
respiratory aliasing artefacts in accelerated myocardial
perfusion imaging (MPI) reconstructions during
free-breathing; as liable to occur during stress imaging
at high parallel imaging acceleration factors. A
multiple free-breathing prescans (MFP) technique gives
an extended range of coil sensitivity information
throughout the respiratory cycle, allowing improvements
in the accuracy of parallel imaging reconstructions
through selection of appropriate reference data.
Applicable to single-shot dynamic acquisition series,
the MFP method is shown to reduce aliasing artefacts as
caused by hyperpnoea in MPI in comparison to standard
parallel imaging methods.
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