科研之友
微信
新浪微博
Facebook
分享链接
摘要
Objectives-The aim of this study was to construct an anatomically correct phantom for visualization of anal sphincter complex structures. %26lt;br%26gt;Methods-To make an endoanal ultrasound phantom, we experimented with a variety of commercially available materials to simulate hyperechoic, hypoechoic, and isoechoic tissue consistency. We created external anal sphincter muscle and the levator plate using stand-alone density gel and microbubbles to simulate the echogenicity of the muscles. A mold was created in a container, the muscles were inserted, and the mold was filled with high-density clear gel and allowed to fill. Once finished, the container was sealed tightly and stored for later use. To evaluate the accuracy of the model, 6 ultrasound imaging raters from different disciplines were included. The raters were administered a 6-item Internet-based interactive test using 2-dimensional images obtained from scanning the phantom. Rater agreement was determined. The Fleiss kappa statistic was calculated to determine inter-rater reliability. %26lt;br%26gt;Results-The raters identified the structures in 32(89%) of 36 test questions. There was good to excellent agreement among the readers. Agreement rates for visualization of the external anal sphincter, perineal body, and internal anal sphincter were 67%, 83%, and 100%, respectively. %26lt;br%26gt;Conclusions-An endoanal phantom can be constructed as a simulator for endoanal sonography.
- 出版日期2013-8
