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Abstract #1769

Arterial Transit Delay Measurement Using Pseudo-Continuous ASL with Variable TR and Interleaved Post-Labeling Delays

Kun Lu1, Thomas T. Liu1, Youngkyoo Jung1

1Center for Functional MRI, UCSD, La Jolla, CA, United States

Conventional arterial transit delay measurements consist of a series of separate ASL experiments acquired at several different post-labeling delays. Such measurements are usually time-consuming and can be formidable overheads for ASL studies. The time requirement also makes the measurements highly sensitive to motion. This study presents a simple yet effective modification of the conventional method for measuring transit delay with shorter scan time and less motion sensitivity. Such a method could be beneficial to all ASL studies.