Department of Radiology, Virgen de la Arrixaca University Hospital, Ctra. Madrid-Cartagena, s/n, 30120, El Palmar, Murcia, Spain.
Department of Urology, Virgen de la Arrixaca University Hospital, Ctra. Madrid-Cartagena, s/n, 30120, El Palmar, Murcia, Spain.
Eur Radiol. 2018 May;28(5):1961-1968. doi: 10.1007/s00330-017-5211-3. Epub 2017 Dec 15.
To describe the clamp method for performing retrograde sonourethrography (RSUG) and contrast-enhanced voiding sonourethrography (CE-VSUG) via the transperineal approach in male adults.
Prospective study of 113 males (14-86 years) with urethral strictures confirmed by urethrography who received sonourethrography via the clamp method between 2011 and 2015. The characteristic parameters of the quantitative variables were calculated and a comparative analysis of the qualitative variables was conducted using the McNemar test.
RSUG was performed successfully in all the cases (n = 113) and detected 49 cases with anterior urethral strictures; the strictures in the proximal bulbar cone in five of them (10.2%) were not visualised on retrograde urethrography (RUG) (p < 0.05). CE-VSUG was performed successfully in 97 cases and observed posterior urethral strictures in 82; the bladder neck strictures in 6 of them (7.3%) were not observed on voiding cystourethrography (VCUG) (p < 0.05). Retrograde bladder filling was achieved in approximately 6 min.
The clamp method enables RSUG and CE-VSUG to be performed simply, effectively and painlessly by a single operator. It also allows the evaluation of cases with urethromeatal alterations (stricture, hypospadias and meatotomy).
• The clamp method enables RSUG to be performed simply and painlessly. • The clamp method requires only one operator and allows assessing urethromeatal alterations. • RSUG shows greater capacity for detecting anterior urethral strictures than RUG. • The clamp method achieves retrograde bladder filling in approximately 6 min. • CE-VSUG shows greater capacity for detecting strictures than VCUG.
描述经会阴途径逆行超声尿道造影（RSUG）和对比增强排空超声尿道造影（CE-VSUG）的夹钳法在成年男性中的应用。
对 2011 年至 2015 年间通过夹钳法接受超声尿道造影的 113 例（14-86 岁）尿道狭窄患者进行前瞻性研究。对定量变量的特征参数进行计算，对定性变量进行 McNemar 检验的比较分析。
所有患者（n=113）均成功进行 RSUG，发现 49 例前尿道狭窄；其中 5 例（10.2%）近端球部尿道狭窄在逆行尿道造影（RUG）中无法显示（p<0.05）。97 例患者成功进行 CE-VSUG，观察到 82 例后尿道狭窄；其中 6 例（7.3%）膀胱颈部狭窄在排尿性膀胱尿道造影（VCUG）中无法观察到（p<0.05）。逆行膀胱充盈时间约 6 分钟。
夹钳法可由单一操作者简单、有效、无痛地进行 RSUG 和 CE-VSUG，还可评估尿道-尿道口改变（狭窄、尿道下裂和尿道口切开术）的病例。
夹钳法可简单、无痛地进行 RSUG。
夹钳法只需一名操作者，可评估尿道-尿道口改变。
RSUG 检测前尿道狭窄的能力优于 RUG。
夹钳法可在约 6 分钟内实现逆行膀胱充盈。
CE-VSUG 检测狭窄的能力优于 VCUG。
