Original ResearchPublished 9 October 2026VB-ROI-focused segmentation-to-morphometry workflow for vertebrobasilar dolichoectasia assessment on MRAJianheng Guan · Zhihua Liu · Hongkai Qiu · Chuanming Chen · Shujuan Yang · Jinfeng Cui · Zhibin Dai · Jin ZhangFrontiers in Neurologydoi 10.3389/fneur.2026.1943260