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Abstract #4061

Aliasing, Off-Resonance Saturation, and Residual Signal Analysis for PCASL

Tejas Nair1, Rolf Pohmann2, Michael Gach1

1Research Imaging Facility, Nevada Cancer Institute, Las Vegas, NV, United States; 2MRT, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany

The aliasing, off-resonance saturation, and residual signal (control-label) characteristics of pulsed continuous arterial spin labeling (PCASL) were measured in a 2% agar phantom using various values of label and control RF (B1) and gradient (Gmax) amplitudes. Aliasing and off-resonance saturation for both the label and control increased with increasing B1 but decreased with increasing Gmax. The residual signal also decreased with increasing Gmax.