The Diagnostic Value of DSA and MR in Moyamoya Disease

Objective To evaluate the diagnostic value of digital subtraction angiography(DSA) and magnetic resonance angiography(MRA) in Moyamoya disease.Methods Twelve patients with Moyamoya disease were examined with MRA,and 10 patients were examined with DSA.Results On MRA,all cases showed stenosis or obstruction distal from the internal carotid bifurcation,the obvious abnormal collateral circulation was increased in basal area,the vascular network was smoky.DSA demonstrated stenosis or obstruction at anterior segment and intermediate segment of of large arteries above the internal carotid bifurcation,the increased abnormal vascular network in basal area and anastomosis branch established with collateral circulation more clearly than MRA.Conclusion As a noninvasive vascular imaging method,MRA could make accurate diagnosis for Moyamoya disease,especially suitable for children;DSA is superior to MRA in showing moyamoya vessels,collateral branches.