Dual vessel arterial spin labeling scheme for regional perfusion imaging
Zimine I, Petersen E, Golay X
National Neuroscience Institute
Recently introduced Regional Perfusions Imaging (RPI) techniques have great clinical potential for evaluation of patients with cerebro-vascular disorders. In the original approach, three ASL acquisitions with selective labeling of left and right ICAs and posterior arteries was necessary to obtain regional flow information. Here, we propose a new labeling scheme allowing obtaining identical RPI maps using only two ASL acquisitions. The new method is based on simultaneous labeling of lateral and posterior circulation, and a simple combination of the data allows extraction of individual flow territories. Demonstration of the approach on 7 individuals provided matching flow territories and perfusion values.