Microdroplet Tracking Using Biplane Digital Subtraction Angiography for Cerebral Arteriovenous Malformation Blood Flow Path and Velocity Determinations

Summary: High-speed biplane angiography is used to de-termine the path and velocity of microdroplets of contrast material in three dimensions. By allowing more accurate determination of detailed blood flow in feeding vessels and draining veins of cerebral arteriovenous malformations than available with standard angiography, the new method offers the potential for more accurate treatment and fur-ther study of neurovascular/cerebrovascular hemodynam-ics. The first study of the method is presented. Details of blood flow can influence the progression of vessel disease (1–4). Also, for improved endo-vascular treatment of arteriovenous malformations (AVMs) with n-butyl cyanoacrylate (enbucrilate) embolic material, it is essential to determine ac-curately its transit time from the feeding vessel