Department of Ultrasound in Medicine, Shanghai Institute of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated 6th People's Hospital, Shanghai, People's Republic of China.
Department of Urology, Shanghai Jiao Tong University Affiliated 6th People's Hospital, Shanghai, People's Republic of China.
J Urol. 2018 Feb;199(2):568-575. doi: 10.1016/j.juro.2017.08.098. Epub 2017 Sep 1.
The sonourethrogram is a useful alternative to the traditional retrograde urethrogram to evaluate anterior urethral strictures. With the development of 3-dimensional reconstructive techniques 3-dimensional urethral imaging can provide more accurate and useful information to enable the surgeon to make the best surgical decisions. We evaluated the accuracy and efficacy of a 3-dimensional reconstructed digital model of the urethra based on the sonourethrogram to assess anterior urethral disease.
A total of 50 patients with an anterior urethral stricture and 10 healthy volunteers were enrolled in this study from April 2014 to January 2017. All patients and volunteers underwent sonourethrogram and retrograde urethrogram. Three-dimensional urethral models were reconstructed based on the sonourethrogram. Stricture length and location on retrograde urethrogram or sonourethrogram based images were compared with those found at operation.
The 3-dimensional digital model revealed the entire anterior urethra, including the navicular fossa, and the penile and bulbar parts. The semitransparent model clearly demonstrated the structure of the corpus spongiosum and inside the urethral lumen. Further information on spongiofibrosis could also be seen in the 3-dimensional digital model. There was no significant difference in stricture length or location in the 3-dimensional model compared with retrograde urethrogram imaging and actual surgical findings. However, the latest technique could only reconstruct the short segment of the anterior urethra due to the probe width limitation.
The 3-dimensional computerized model based on the sonourethrogram is a novel and effective technique of evaluating anterior urethral strictures.
声尿道图是一种评估前尿道狭窄的有用替代方法，传统的逆行尿道造影。随着三维重建技术的发展，三维尿道成像可以提供更准确、更有用的信息，使外科医生能够做出最佳的手术决策。我们评估了基于声尿道图的三维重建数字尿道模型评估前尿道疾病的准确性和疗效。
2014 年 4 月至 2017 年 1 月，共纳入 50 例前尿道狭窄患者和 10 例健康志愿者。所有患者和志愿者均行声尿道图和逆行尿道造影。根据声尿道图重建三维尿道模型。比较逆行尿道造影或声尿道图图像上的狭窄长度和位置与手术发现的狭窄长度和位置。
三维数字模型显示了整个前尿道，包括舟状窝、阴茎和球部。半透明模型清楚地显示了海绵体的结构和尿道腔内的结构。在三维数字模型中还可以看到海绵体纤维化的进一步信息。与逆行尿道造影成像和实际手术发现相比，三维模型中的狭窄长度或位置无显著差异。然而，由于探头宽度的限制，最新技术只能重建前尿道的短段。
基于声尿道图的三维计算机模型是一种评估前尿道狭窄的新的有效技术。
