Blind Detection of Source Vessel Locations & Resonance Offsets using Randomly Encoded VEASL

Eric Wong¹, Jia Guo²

In Vessel Encoded ASL (VEASL), arteries in the tagging plane are encoded in a pseudo-continuous ASL tagging scheme to allow for the identification of vascular territories.  Resonance offsets in the tagging plane reduce tagging efficiency and can be alleviated using multiphase approaches.  In this work, we introduce the use of random encoding to simultaneously encode and identify both the vessel locations and resonance offsets with high efficiency and without any prior knowledge.  We expect that this approach will be useful when collateral or variant circulation may be present, and resonance offsets significant.