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.
Keywords