Turkay Rustu, Inci Ercan, Yenice Mustafa Gurkan, Tugcu Volkan
Tevfik Fikret cad., Istanbul, Turkey.
Ultrasound. 2017 Aug;25(3):150-155. doi: 10.1177/1742271X17697512. Epub 2017 Mar 3.
Erectile dysfunction (ED) is a common health problem among males, and radiology has limited use in its diagnosis and treatment. Shear wave elastography (SWE) is a new sonographic technique. In this study, we examined the significance of SWE in the diagnosis of ED.
The study included a total number of 70 participants. The mean age of the participants was 54.14 ± 8.03 years (range: 39 and 71 years old). We composed two groups. Group 1 had 35 patients who presented to the urology clinic in our hospital complaining of ED, and had a score of 17 or lower from the International Index of Erectile Function (IIEF) questionnaire. Group 2 consisted of 35 healthy volunteers who did not have ED. SWE measurements were performed from corpus cavernosum penis in both groups, and the results were noted. Differences between the groups were evaluated statistically.
The difference between the mean SWE measurements of two groups (Group 1: 20.94 ± 6.23 kPa and group 2: 24.63 ± 7.58 kPa) was found to be statistically significant ( = 0.027; < 0.05). For a cut-off value of 17.1 kPa, the SWE method has specificity, sensitivity, positive predictive value, and negative predictive value regarding diagnosis of ED as 94.29%, 34.29%, 85.71%, and 58.93%, respectively. The mean age of the groups did not show a statistically significant difference ( = 0.287; > 0.05).
Due to its high specificity and positive predictive value, SWE can offer useful data in the radiologic evaluation of ED cases.
勃起功能障碍（ED）是男性常见的健康问题，放射学在其诊断和治疗中的应用有限。剪切波弹性成像（SWE）是一种新的超声技术。在本研究中，我们探讨了SWE在ED诊断中的意义。
本研究共纳入70名参与者。参与者的平均年龄为54.14±8.03岁（范围：39至71岁）。我们分为两组。第一组有35例患者，他们因ED到我院泌尿外科就诊，国际勃起功能指数（IIEF）问卷评分在17分及以下。第二组由35名无ED的健康志愿者组成。对两组阴茎海绵体进行SWE测量，并记录结果。对两组间的差异进行统计学评估。
发现两组平均SWE测量值之间存在统计学显著差异（第一组：20.94±6.23kPa，第二组：24.63±7.58kPa）（P=0.027；P<0.05）。对于17.1kPa的临界值，SWE方法对ED诊断的特异性、敏感性、阳性预测值和阴性预测值分别为94.29%、34.29%、85.71%和58.93%。两组的平均年龄未显示出统计学显著差异（P=0.287；P>0.05）。
由于其高特异性和阳性预测值，SWE可为ED病例的放射学评估提供有用数据。
