All of them had conventional X-ray films, 13 cases had CT scanning, 11 cases had ECT scanning, 5 cases had MR scanning, and 4 cases with DSA.

• 15例均行平片检查 ,其中 13例行CT检查 ,11例行发射型计算机体层摄影(ECT)检查 ,5例行MR检查。 4例行DSA造影检查。