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目的探讨卵巢子宫内膜异位囊肿患者在DWI序列上的表现特征,初步评估ADC值测量对鉴别卵巢子宫内膜异位囊肿与其他卵巢区囊性病变的可能性。方法应用3.0TMRI的DWI序列对30例卵巢子宫内膜异位囊肿患者和30例其他卵巢区囊性病变患者进行盆腔检查。在ADW4.3工作站上测量不同b值的DWI信号强度,计算CNR和SNR。同时利用ADW4.3工作站生成ADC图,测量ADC值。结果卵巢子宫内膜异位囊肿于DWI上表现为高信号,而其他卵巢区囊性病变表现为中等偏低信号。b值为800时,二者之间的差异有统计学意义(P<0.05),表现为卵巢子宫内膜异位囊肿的ADC值低于其他卵巢区囊性病变。结论 DWI序列上卵巢子宫内膜异位囊肿呈显著高信号,具有一定特征;当b值取0、800 s/mm2时ADC值测量有助于其与其他卵巢区囊性病变鉴别。
Objective To investigate the features of DWI in patients with ovarian endometriosis and to evaluate the possibility of ADC value measurement in differentiating ovarian endometriosis cyst from other ovarian cystic lesions. Methods Thirty cases of ovarian endometriosis cyst and 30 cases of other ovarian cystic lesions were examined by DWI 3.0T MRI. The DWI signal intensities at different b-values were measured on an ADW4.3 workstation and the CNR and SNR were calculated. At the same time using ADW4.3 workstation generate ADC map, measure the ADC value. Results Ovarian endometriosis cysts showed high signal intensity on DWI, while other ovarian cystic lesions showed moderate to low signal. b value of 800, the difference between the two was statistically significant (P <0.05), the performance of the ovarian endometriosis cyst ADC value is lower than other ovarian cystic lesions. Conclusion The DWI sequence of ovarian endometriosis cysts is significantly high signal, with certain characteristics; when the b value of 0,800 s / mm2 ADC value measurement is helpful to identify with other ovarian cystic lesions.