Time-encoded Arterial Spin Labeling for Renal Perfusion Quantification Covering the Whole Kidneys

We performed a series of optimization on the encoding scheme, pseudo-continuous ASL (pCASL) parameters, and post-processing of time-encoded pCASL (te-pCASL), then proposed Time-encoded Arterial Spin labeling to cover the whole Kidneys (TASK) to achieve multiple time-points renal perfusion measurement efficiently. With Gave of 0.4-0.6 mT/m and Gmax/Gave around 10, Walsh-Hadamard encoding scheme, and retrospective registration, TASK was able to provide accurate and reproducible RBF and ATT measurement covering the whole kidneys with single 5-min scan.