Aim:To find the causes of intracranial dural arteriovenous fistulas(IDAVF) with spinal cord venous drainage in 3 cases combining with the clinical features,radiological findings and course.

• 目的:结合3例硬脑膜动静脉瘘(IDAVF)伴脊髓表面引流的影像学、临床表现、病程特点,探讨引起脊髓症状的原因。