Transposition of lengthened omentum or microsurgical trans-plantation of an omental graft to the brain provides an effective source ofcollateral flow, because of the development of newly formed omental-cere-bral vascular connections.

• 将延长的大网膜引至脑表面或用显微手术方法移植大网膜于脑表面,由于在大网膜与脑之间形成新的血管联系,而造成有效的侧支循环。