Angiographic assessment of transit times in cerebral arteriovenous malformations prior to NBCA embolization using ethiodol droplets

摘要

A minimally invasive endovascular therapeutic approach to cerebral arteriovenous malformations (AVMs) involves several different steps. A microcatheter is placed into the feeding artery of the AVM nidus. Prior to planed embolization, Amytal (sodium amobarbital) is injected to test for neurological deficits. In case of a negative result the assessment of the transit time of radio-opaque dye through the nidus is performed. The estimated transit time is used to determine the mixture ratio of the occlusive agent (glue).