The results showed that aqueductstenosis was located in distal segment in most cases and proximal segment or all segment in a few cases.
结果发现狭窄多发生于导水管远段，少数位于近段或全程狭窄。
2
The adhesions is the most common cause of aqueductstenosis and MR is the best for diagnosis of aqueductstenosis, especially on midsagital section.
粘连是导水管狭窄最常见的原因，少数系由导水管先天畸形或胶样变所致。
3
ETV is an effective method of treating obstructive hydrocephalus caused by aqueductstenosis and occupying lesions in posterior cranial fossa and midbrain.