Effects of collateral circulation on haemodynamic flow status in intracranial artery stenosis depicted by computational fluid dynamics
TWH Leung, SY Fan, HL Ip, AYL Lau, DYW Siu, EYL Dai, LKS Wong, DS Liebeskind
Division of Neurology, Department of Medicine and Therapeutics, The Chinese University of Hong Kong
1. Risk of stroke recurrence is not solely affected by the degree of anatomical stenosis.
2. Haemodynamic changes across the stenosed vessel are as important as the degree of luminal narrowing in terms of implication on stroke risk.
3. Studying haemodynamic changes in the cerebral circulation is feasible with computational fluid dynamics technique coupling to various imaging modalities, including computed tomographic angiography.