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磁共振DWI值对病毒性脑炎和脑低级星形细胞瘤 的鉴别诊断价值

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Keywords: 病毒性脑炎,脑低级星型细胞瘤,DWI,ADC值

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Abstract:

目的探讨扩散加权成像(DWI)和表观扩散系数(ADC)值对病毒性脑炎和脑低级星形细胞瘤的鉴别诊断价值。方法28例病毒性脑炎和27例脑低级星形细胞瘤在治疗前或手术前接受了常规MRI、DWI检查。病毒性脑炎经临床及治疗随访证实,脑低级星形细胞瘤病例经手术及病理证实。测量并计算两组病例DWI的表观扩散系数(ADC)值和相对表观扩散系数(rADC)值。结果病毒性脑炎平均ADC值和rADC值分别为(1.07±0.19)×10-3mm2/s和(1.26±0.21)×10-3mm2/s,脑低级星形细胞瘤平均ADC值和rADC值分别为(1.60±0.28)×10-3mm2/s和(2.04±0.41)×10-3mm2/s,差异均有统计学意义(P<0.01)。结论DWI的ADC值和rADC值能较好地鉴别病毒性脑炎和脑低级星形细胞瘤。

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