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Abstract #4422

Resolving Arterial Contributions in Vessel Encoding Dynamic Angiography

Michael A. Chappell1,2, Tom W. Okell1, Peter Jezzard1, Mark W. Woolrich1

1FMRIB Centre, University of Oxford, Oxford, United Kingdom; 2Institute for Biomedical Engineering, University of Oxford, Oxford, United Kingdom

Using a Vessel Encoded Arterial Spin Labelling preparation it is possible to provide non-invasive vessel selective angiography. However, the ability to separate the contributions from all the labelled arteries, e.g. all four carotids and vertebrals, can be limited by the specification of the acquisition. Here a new analysis method for VE-ASL data, that can separate different vessel contributions with even limited data, is modified and applied to angiographic images. Results for separation of carotids and vertebral are presented indicating that this is a viable alternative to highly invasive intra-arterial contrast methods.