The Clinical Value of Susceptibility-weighted Imaging in Diagnoisis and Treatment of Acute Ischemic Cerebral Infarction

Objective To explore the clinical value of MR susceptibility-weighted imaging(SWI) in diagnosis and treatment of acute ischemic cerebral infarction.Methods 36 cases with acute ischemic cerebral infarction were performed with computer tomography(CT),conventional MRI,magnetic resonance angiography(MRA),diffusion weighted imaging(DWI) and SWI.All the images were analyzed comparatively.Results 36 cases cerebral infarction were demonstrated by high signal on DWI images.MRA manifested the stenosis,obliteration or reduction in branch of anterior cerebral artery,middle cerebral artery and posterior cerebral artery in 31 cases.The occlusion of internal carotid artery was demonstrated in 1 case.SWI showed Veins in the area of infarction reduced in 24 cases,absence in 7 cases and varying degrees cerebral hemorrhage in 13 cases,but on CT and routine MRI only 4 cases showed hemorrhage clear and definite.Conclusions SWI can manifest the specificity in acute cerebral infarction complicating brain microbleeds,and can be used to estimate the activity of brain tissue of infarction area,which significantly influence the decision of clinic treatment.Therefore SWI should be a routine examination for the diagnosis of acute cerebral infarction.