Of 12 MRA, 9 showed enlarged carotid bifurcation and 4 revealed CBT feeding vessels.All 10 CBTs were enhanced significantly after gadolinium administration.

• 12个行MRA检查者9个表现为颈动脉分叉扩大(75%25)，其中4个可见肿瘤血管(33.；33%25)，10个增强检查均表现为明显强化。