ESWAN幅值图在卵巢子宫内膜异位囊肿诊断中的价值

The value of enhanced T2star weighted angiography magnitude images in the diagnosis of ovarian endometrial cysts

目的:探讨ESWAN幅值图在卵巢子宫内膜异位囊肿诊断中的价值。方法:由两位影像诊断医师对36例经手术病理证实的卵巢囊性病变(子宫内膜异位囊肿18例30个病灶、其他囊性病变18例24个病灶)患者的常规MRI及ESWAN图像进行独立评估,重点观察ESWAN序列mIP幅值图上囊性病变囊壁内是否有信号缺失。计算ESWAN序列mIP幅值图上囊壁内信号缺失鉴别卵巢子宫内膜异位囊肿和其他囊性病变的敏感度、特异度、阳性和阴性预测值,对两位医师的评估结果进行一致性检验。结果:两位医师在评估ESWAN序列mIP幅值图囊性病变囊壁内是否有信号缺失中,52个(96.3%,52/54)病灶的评估结果是一致的,Kappa系数为0.925,一致性较好。ESWAN序列mIP幅值图上囊壁内信号缺失鉴别卵巢子宫内膜异位囊肿和其他囊性病变的敏感度、特异度、阳性预测值和阴性预测值分别为90.0%、91.7%、93.1%、88.0%。结论:ESWAN幅值图能为卵巢子宫内膜异位囊肿的诊断及鉴别诊断提供重要信息,有助于提高卵巢子宫内膜异位囊肿的诊断符合率。

Objective：This study was aimed to study the value of enhanced T2 star weighted angiography（ESWAN）magnitude images in the diagnosis of ovarian endometrial cysts.Methods：36patients with surgery and pathology proven ovarian cystic lesions（18patients with 30 endometrial cysts,another 18 patients with 24non-endometrial cysts）were studied retrospectively.The onventional MRI and ESWAN MR images were reviewed independently by two senior radiologists,and concentrated on the presence or absence of signal void within the cyst wall on ESWAN mIP magnitude images.The sensitivity,specificity,positive and negative predictive values in terms of differentiating endometrial cysts from other cystic lesions by calculating the signal void within the cyst wall on ESWAN mIP magnitude images were performed and the inter-readers consistency was evaluated.Results：Of the presence or absence of signal void within the cyst wall evaluated on ESWAN mIP magnitude images,52lesions（96.3%,52/54leisons）showed consistency by these two readers,with a Kappa coefficient of0.925,which indicated perfect agreement.The sensitivity,specificity,positive and negative predictive values was 90.0%,91.7%,93.1%and 88.0%,respectively.Conclusion：ESWAN magnitude images can provide valuable information for the diagnosis and differential diagnosis of ovarian endometrial cysts,and it is helpful to improve the diagnostic accuracy.