Abstract #3303

Comparison of Velocity-Selective Arterial Spin Labeling using multiple VS Saturation and FT-VS inversion – a Theoretical Study

Shaurov Das¹, Luis Hernandez-Garcia², Ryan Daniel Hernandez³, and Jia Guo¹

¹Bioengineering, University of California, Riverside, Riverside, CA, United States, ²Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States, ³Physics, University of California, Riverside, Riverside, CA, United States

Velocity selective ASL (VSASL) is the latest addition to the family of ASL techniques, with good promise on resolving transit delay sensitivity in ASL. Though an improvement in SNR efficiency has been reported by using two-module VS saturation and VS inversion pulse, the comparison between them is yet to be done. This study aims to compare their theoretical performance with Bloch simulation and a few realistic scenarios and look for knowledge about existing limitations which can, in turn, lead to further improvement of these techniques. Additionally, a few variants of VSI pulses including most recent improvement were explored and compared.

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