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Abstract #3935

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

1 NIHR Cardiovascular BRU, Royal Brompton Hospital, London, United Kingdom, 2 NHLI, 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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