目的探讨磁共振扩散加权成 像ADC值在鉴别诊断女性盆腔良恶性肿 瘤的价值。方法 回顾性分析42 例经手 术病理证实女性盆腔肿瘤患者的MRI资 料，分析肿瘤DWI信号强度及ADC值的差异。结果女性盆腔良性肿瘤病变DWI 信号表现不同，可以呈等、较高或高 信号，恶性肿瘤性病变在DWI上大部分 表现为高信号。良性病变平均ADC值为 (1.55±0.48)×10-3mm2 /s，恶性病变平均 ADC值为(1.23±0.37)×10-3mm2 /s，恶性 病变的ADC低于良性现变(P=0.023)。结论 磁共振扩散加权成像(DWI)信号和ADC值可 为良恶性肿瘤的鉴别诊断提供依据。

Objective To explore the value of ADC in the differential diagnosis between benign and malignant tumors in the female pelvis. Methods DWI sequence was performed in 42 females with pelvic tumors proved by histopathology. The signal intensity on DWI and ADC values for tumors were analyzed. Results Benign tumors showed isoor hyper-signal intensity, while most malignant tumors showed hyper-signal intensity on DWI sequence. The mean ADC values for benign and malignant tumors were (1.55±0.48)×10-3mm2 /s and (1.23±0.37)×10-3mm2 /s, respectively. The difference of ADC value between two groups were statistically significant(P=0.023). Conclusion The signal intensity on DWI and ADC vale provide valuable information for differential diagnosis for pelvic tumors in female.