Teh H S, Lin M B K, Tsou I Y Y, Khoo T K, Lim P H C, Ng F C, Chin C M, Peh S O H, Ho S H, Ng K K, Fong Y K
Department of Radiology, Changi General Hospital, 2, Simei Street 3, Singapore 529889.
Ann Acad Med Singap. 2002 Mar;31(2):165-9.
Vasculogenic impotence is one of the major causes of erectile dysfunction. Cavernosometry and cavernosography is traditionally the gold standard for evaluation of venogenic impotence. However, it is invasive and there are potentially significant complications. Penile colour flow Doppler imaging (PCDI) is non-invasive and can be used to assess venous incompetence.
One hundred and sixty-eight patients were referred for PCDI assessment from March 1998 to February 2001. Forty-three of these also had cavernosogram and cavernosometry done and were included in the study.
The sensitivity was 93.9%, the specificity was 90.0%, the accuracy was 93.0% with a negative predictive value of 81.8% and a positive predictive value of 96.9%. Kappa value of 0.81 was obtained, indicating excellent agreement between PCDI and cavernosogram and cavernometry.
Penile colour flow Doppler imaging is accurate in the assessment of venogenic erectile dysfunction. It can replace cavernometry and cavernosogram as a screening tool. Cavernometry and cavernosogram should only be done in cases when PCDI suggests venogenic impotence, and when surgery is contemplated.
血管性阳痿是勃起功能障碍的主要原因之一。海绵体测压和海绵体造影传统上是评估静脉性阳痿的金标准。然而，它具有侵入性，且存在潜在的严重并发症。阴茎彩色血流多普勒成像（PCDI）是非侵入性的，可用于评估静脉功能不全。
1998年3月至2001年2月，168例患者被转诊进行PCDI评估。其中43例还进行了海绵体造影和海绵体测压，并纳入研究。
敏感性为93.9%，特异性为90.0%，准确性为93.0%，阴性预测值为81.8%，阳性预测值为96.9%。kappa值为0.81，表明PCDI与海绵体造影和海绵体测压之间具有极好的一致性。
阴茎彩色血流多普勒成像在评估静脉性勃起功能障碍方面准确。它可作为一种筛查工具替代海绵体测压和海绵体造影。仅在PCDI提示静脉性阳痿且考虑手术时才应进行海绵体测压和海绵体造影。
