Title: Value of Contrast Enhanced FLAIR T_2WI in the Diagnosis of Meningeal Metastasis
Abstract: Objective:To evaluate the value of conventional MRI and post-contrast FLAIR T2WI images in the diagnosis of meningeal metastasis.Methods:20 cases with meningeal metastasis (including 5 cases with dural metastasis and 15 cases with leptomeningeal metastasis) were enrolled in this study.Pre-contrast and post-contrast (SE T1WI,FLAIR T2WI) MRI in all patients were acquired and analyzed retrospectively.Results:Metastatic lesions were found in 6 cases on pre-contrast MR images,with ill-defined margin.On post-contrast SE T1WI,the meningeal lesions were demonstrated as linear or nodular enhancement.The leptomeningeal metastatic lesions showed more clearly on the post-contrast FLAIR T2WI images which was also helpful in the differentiation of leptomeningeal metastases from normally enhanced blood vessels.Conclusion:Enhanced MRI plays an important role in the diagnosis of meningeal metastasis,the detection rate and diagnosis accuracy of leptomeningeal metastasis could be improved by using SE T1WI combined with FLAIR T2WI sequences after contrast enhancement.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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