Comparative Observation of MRI-SWI T1WI T2WI and T2FLAIR in Diagnosing Intracranial Cavernous Hemangiomas
Objective:To investigate the diagnostic value of magnetic resonance susceptibility-weighted imaging(MRI-SWI),T1-weighted imaging(T1WI),T2-weighted imaging(T2WI),and T2 fluid-attenua-ted inversion recovery(T2FLAIR)in intracranial cavernous hemangioma.Methods:From March 2019 to March 2023,153 patients suspected of intracranial cavernous hemangioma were selected.All patients under-went preoperative MRI examinations,including MRI-SWI,T1WI,T2WI,and T2FLAIR.Surgical pathology results were used as the gold standard.The diagnostic values of the different MRI sequences were calculated.Results:MRI-SWI correctly diagnosed 97 patients with a total of 177 lesions,whereas T1WI correctly diag-nosed 72 patients with 121 lesions,T2WI correctly diagnosed 77 patients with 132 lesions,and T2FLAIR cor-rectly diagnosed 82 patients with 143 lesions.The detection rate of MRI-SWI for cavernous hemangiomas was significantly higher than that of T1WI,T2WI,and T2FLAIR(x2=28.698,P＜0.05;x2=22.299,P＜0.05;x2=16.257,P＜0.05).The detection rate of T2FLAIR was higher than that of T1WI(x2=7.211,P＜0.05).There were no significant differences in detection rates between T1WI and T2WI or between T2FLAIR and T2WI(x2=1.676,P＞0.05;x2=1.972,P＞0.05).MRI signal characteristics of cavernous hemangio-mas varied among the sequences.T1WI mainly showed mixed signals(43.80％)and low signals(30.58％).T2WI mainly showed mixed signals(49.24％),characterized by central punctate or reticulated high signals with low-signal peripheral borders,known as the"iron ring sign,"followed by low signals(35.61％).T2FLAIR mainly showed round or oval mixed signals(58.33％)with an internal appearance resembling pop-corn or reticulation,followed by low signals(34.09％).MRI-SWI predominantly showed low signals(95.48％),highlighting iron deposition areas and tumor bodies with patchy or punctate low signals in and around the lesions.Sensitivity and specificity for diagnosing cavernous hemangiomas were as follows:T1WI had a sen-sitivity of 74.23％and specificity of 85.71％;T2WI had a sensitivity of 79.38％and specificity of 83.93％;T2FLAIR had a sensitivity of 84.54％and specificity of 78.57％;MRI-SWI had a sensitivity of 100％and specificity of 94.64％.Conclusion:MRI-SWI provides a higher diagnostic value for intracranial cavernous hemangiomas compared to T1WI,T2WI,and T2FLAIR sequences.
万方数据
维普
