Objective To evaluate the application value of MR diffusion-weighted imaging(DWI)in the detection of cerebral microbleeds(CMBs)and explore the clinical value of susceptibility weighted imaging(SWI)in the prognosis of acute cerebral infarction.Methods A total of 96 patients with acute phase cerebral infarction who underwent routine magnetic resonance imaging(MRI),DWI,and SWI sequence scans at Beijing Huairou Hospital from January 2022 to December 2023 were collected,to compare the differences in detection of CMBs between two sequences(DWI and SWI),and evaluate the prognosis of patients after 3 months of follow-up,and analyze the risk factors affecting prognosis.Results Among 96 patients,SWI detected CMBs in 42 cases with 384 locations,while DWI detected 37 cases with 115 locations.The difference in the number of detected cases between DWI and SWI was not statistically significant(Z=-1.225,P=0.119),but the difference of detection rate between the two was statistically significant(Z=-3.127,P=0.001).Multivariate analysis showed that CMBs 2 level was an independent risk factor affecting prognosis(OR=16.551,95%CI 2.136-148.119,P=0.013).Conclusion The presence and quantity of CMBs are correlated with the prognosis of patients with acute cerebral infarction.DWI is helpful in detecting cerebral microbleeds,but the sensitivity of SWI in detecting CMBs is higher than DWI.
Magnetic resonance imagingAcute cerebral infarctionCerebral microbleedsPrognosis
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