Department of Obstetrics and Gynecology, Ospedale San Gionvanni di Dio, University of Cagliari, Cagliari, Italy.
Eur J Obstet Gynecol Reprod Biol. 2013 Nov;171(1):157-60. doi: 10.1016/j.ejogrb.2013.08.031. Epub 2013 Aug 26.
To analyze the reproducibility of the IOTA simple ultrasound rules for classifying adnexal masses as benign or malignant among examiners with different level of expertise using stored 3D volumes of adnexal masses.
Five examiners, with different levels of experience and blinded to each other, evaluated 100 stored 3D volumes from adnexal masses and looked for the presence or absence of malignant or benign features according to the IOTA definitions. Multiplanar view and virtual navigation were used. All examiners had to assess the 3D volume of each adnexal mass and classify it as benign or malignant. To analyze intra-observer agreement each examiner performed the assessment twice with a two-week interval between the first and second assessments. To analyze the inter-observer agreement, the second assessment from each examiner was used. Reproducibility was assessed calculating the weighted Kappa index.
Intra-observer reproducibility was moderate or good for all observers (Kappa index ranging from 0.59 to 0.74). Inter-observer reproducibility was moderate to good (Kappa index range: 0.46-0.67).
The simple rules are reasonably reproducible among observers with different level of expertise when assessed in stored 3D volumes.
分析使用存储的附件肿块 3D 体积，在不同专业水平的检查者中，IOTA 简单超声规则对附件肿块进行良性或恶性分类的可重复性。
5 名检查者，经验水平不同，彼此之间为盲法，根据 IOTA 定义评估 100 个存储的附件肿块 3D 体积，寻找恶性或良性特征的存在或缺失。使用多平面视图和虚拟导航。所有检查者均必须评估每个附件肿块的 3D 体积，并将其分类为良性或恶性。为了分析观察者内一致性，每位观察者在第一次和第二次评估之间间隔两周进行两次评估。为了分析观察者间一致性，使用每个观察者的第二次评估。通过计算加权 Kappa 指数来评估可重复性。
所有观察者的观察者内可重复性为中度或良好（Kappa 指数范围为 0.59 至 0.74）。观察者间可重复性为中度至良好（Kappa 指数范围：0.46-0.67）。
当在存储的 3D 体积中评估时，具有不同专业水平的观察者对简单规则的可重复性较好。
