Abstract #2061

The feasibility of high resolution vessel wall imaging (HR VWI) based minimum intensity projection (mIP) MRA for evaluating steno-occlusive MCA

Mi Shen¹, Shuo Chen², Yuxin Wang¹, and Peiyi Gao¹

¹Department of Radiology, Beijing Tiantan Hospitial, Capital Medical University, Beijing, China, ²Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China

Stenosis, distal branches and collateral circulation were of great importance in assessing vulnerable vessel beds in stroke patients. Minimum intensity projection (mIP) MRA was derived from high resolution vessel wall imaging (HR VWI), which can be used as evaluating vessel wall, as well as vessel lumen. In this study, we evaluated the feasibility of HR VWI based mIP MRA for evaluating MCA stenosis, occlusion, accompanying microvascular (AMV) and leptomeningeal branches. Using CTA as a standard, mIP MRA outperformed TOF MRA in assessing MCA stenosis, occlusion, AMV and leptomeningeal branches. Consistent with CTA, mIP MRA is feasible for clinical application, and may help in detecting collaterals.

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