Related Experiment Video
Updated: Aug 8, 2026
05:25
Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
Published on: August 14, 2019
Penile colour duplex ultrasonography as a screening tool for venogenic erectile dysfunction
H S Teh1, M B K Lin, I Y Y Tsou
1Department of Radiology, Changi General Hospital, 2, Simei Street 3, Singapore 529889. cyber.xray@yahoo.com
Annals of the Academy of Medicine, Singapore
|April 18, 2002
Summary
Penile Colour Flow Doppler Imaging (PCDI) accurately assesses venogenic erectile dysfunction, showing excellent agreement with traditional methods. This non-invasive technique can replace cavernosometry and cavernosography as a primary screening tool for impotence.
Area of Science:
- Urology
- Radiology
- Vascular Medicine
Background:
- Vasculogenic impotence is a primary cause of erectile dysfunction.
- Cavernosometry and cavernosography are invasive gold standards for evaluating venogenic impotence, carrying significant complication risks.
- Penile Colour Flow Doppler Imaging (PCDI) offers a non-invasive alternative for assessing venous incompetence.
Purpose of the Study:
- To evaluate the diagnostic accuracy of Penile Colour Flow Doppler Imaging (PCDI) in assessing venogenic erectile dysfunction.
- To compare the efficacy of PCDI with traditional cavernosometry and cavernosography.
Main Methods:
- A study involving 168 patients referred for PCDI assessment.
- 43 patients underwent both PCDI and cavernosometry/cavernosography for comparative analysis.
Main Results:
- PCDI demonstrated high diagnostic accuracy: 93.9% sensitivity, 90.0% specificity, and 93.0% overall accuracy.
- Excellent agreement between PCDI and cavernosometry/cavernosography was indicated by a Kappa value of 0.81.
- High positive (96.9%) and negative (81.8%) predictive values were reported for PCDI.
Conclusions:
- Penile Colour Flow Doppler Imaging (PCDI) is a highly accurate tool for diagnosing venogenic erectile dysfunction.
- PCDI can serve as an effective screening tool, potentially replacing invasive cavernosometry and cavernosography.
- Cavernosometry and cavernosography are recommended only when PCDI indicates venogenic impotence and surgical intervention is considered.
Related Concept Videos
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
01:24Imaging Studies II: Ultrasonography
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...