摘要
To the Editor:Eliminating a nidus was deemed to be the key to curing brain arteriovenous malformations (bAVMs).When conducting interventional embolization,it was suggested to superselect the microcatheter close to the nidus before injecting embolic agents.The traditional embolization was conducted via arterial approaches,which required the accessibility of arterial feeders.Difficulties and risks increased in the cases with lesions with narrow calibers,tortuous courses,or "en passage" arterial supplies.Transvenous approaches were proved to be safe and effective accesses in bAVM embolization without the limitations of arteries, The current transvenous approaches were established through femoral and cervical veins.
