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Abstract #2176

ASL Inversion Efficiency for Three Methods and Two Magnetic Fields

Clment S. Debacker1, 2, Jan M. Warnking1, 3, Jrme Voiron2, Emmanuel Luc Barbier, 34

1Team 5: Functional NeuroImaging and Brain Perfusion, Grenoble-Institute of Neuroscience, La Tronche, France; 2MRI, Bruker BioSpin, Ettlingen, Germany; 3U836, INSERM, La Tronche, France; 4Team 5: Functional NeuroImaging and Brain Perfusion, Grenoble Institute of Neurosciences, La Tronche, France

Arterial Spin Labeling (ASL) methods can quantify cerebral blood flow (CBF), but this requires an estimate of the inversion efficiency (IE). The purpose of this study is to estimate IE for three ASL methods (pulsed ASL (PASL), continuous ASL (CASL), and pseudo-continuous ASL (pCASL)) and two magnetic fields in the context of pre-clinical imaging. We also show that shim correction seems to increase IE.