The Comparison of the Diagnostic Value of MRI,MRA and DSA for Moyamoya Disease

Objective To explore the diagnostic value of MRI, MRA and DSA in Moyamoya disease by retrospectively analyzing the clinical and imageologic manifestation of 20 cases. Methods The MRI, MRA, DSA imageologic results of 20 cases of Moyamoya disease which were treated in auther’s hospital during 2004-2007 were collected and analysed. Results There were abnormal signal in imageologic manifestation in all 20 cases in which 10 cases had brain infarction, 6 brain hemorrhage, 2 brain atrophy, 4 softening of the brain and 11 flow empty effect of Moyamoya vessels in the basal ganglia area. MRA in 20 cases and DSA in 9 cases showed stenosis or occlusion at the distal bifurcation of internal carotid arteries and proximal portion of the middle or anterior cerebral artery, in addition to the apparently abnormal vascular net. The collateral circulation and anastomotic vessels were showed more clearly on DSA. Conclusions MRI combined with MRA was accurate for diagnosing Moyamoya disease with non-invasive, economic and feasible advantage. DSA was better than MRA in showing the details such as smoke-like vessels and collateral circulation. DSA must be done if the patients needed for operation.