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Abstract #2689

The effect of fat saturation on arterial spin labeling

Chen Y, Parrish T
Northwestern University

Multi-channel receive-only coils can improve signal-to-noise ratio (SNR) for arterial spin labeling (ASL) studies because the inversion is no longer limited by the extent of the coil. However, we have observed a global decrease in SNR when pulsed-ASL images were acquired with fat saturation using a receive-only coil. This study demonstrates that both static and temporal SNR of non-fat-saturated PASL images are over 50% higher than those of fat-saturated images. We also present water-excitation as an alternative to fat-saturation.