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目的比较平扫FLAIR、增强T1WI及增强FLAIR3种序列对柔脑膜病变的诊断价值。方法26例柔脑膜病变行平扫FLAIR、增强T1WI和增强FLAIR检查。结果病变呈异常脑回样或线样高信号。增强FLAIR显示全部病变,增强T1WI仅显示13例病变,平扫FLAIR仅显示11例病变。对病变显示的统计学分析显示3种序列间具有高度显著性差别(χ2=29.346,P<0.01)。结论增强FLAIR显示柔脑膜病变,尤其是早期病变优于平扫FLAIR和增强T1WI。
Objective To compare the diagnostic value of FLAIR, enhanced T1WI and enhanced FLAIR in the diagnosis of leptomeningeal lesions. Methods Twenty - six cases of leptomeningeal disease underwent plain FLAIR, enhanced T1WI and enhanced FLAIR. Results lesions were abnormal brain back-like or line-like high signal. Enhanced FLAIR showed all lesions, enhanced T1WI showed only 13 lesions, plain FLAIR showed only 11 lesions. Statistical analysis of the lesions showed a highly significant difference among the three sequences (χ2 = 29.346, P <0.01). Conclusion The enhancement of FLAIR showed that leptomeningeal lesions, especially early lesions, were better than FLAIR and T1WI.