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Abstract #3133

Evaluating Circle of Willis using Simultaneous Non-Contrast Angiography and intraPlaque Hemorrhage (SNAP)

Yalun Chen1, Ling Tang2, Le He2, Xihai Zhao2, Zhensen Chen2, and Huijun Chen3

1Chongqing Medical University, Chongqing, People's Republic of China, 2Department of Biomedical Engineering, School of Medicine, Tsinghua University, 3Departement of Biomedical Engineering, School of medicine, Tsinghua University, Beijing, People's Republic of China

The purpose of this study is to evaluate the ability of SNAP to evaluate the CoW by comparing with an established non-contrast MRA technique, time of flight (TOF).We found SNAP have good agreement with TOF and similar intra-reader reproducibility in CoW evaluation. However, the agreement between TOF and SNAP and the reproducibility of each technique is moderate in the anterior communicating artery identification. Thus, SNAP shows great promise for imaging both intracranial artery and vessel wall with a single scan.

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