Multi delay Arterial Spin Labelling offers the advantage of measuring neurophysiological properties such as arterial transit delay which can be used to hep improve cerebral blood flow estimation. Hadamard encoding pCASL is a method with improved temporal resolution and SNR compared to sequential multi delay methods. This work presents the findings of an evaluation of three different Hadamard encoded schemes for perfusion and transit delay estimation. All schemes were comparable with regards to perfusion estimation however showed some interesting regional differences in TD estimation.
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