How to Perform a Penile Duplex Doppler Ultrasound

madman

Super Moderator

This video covers how to perform a penile duplex Doppler ultrasound (PDDU). A PDDU is performed as part of the normal work-up for erectile dysfunction (ED). It helps determine if a patient’s ED is due to arterial insufficiency, venous leakage, or a combination of the two. Additionally, PDDU can be used to assess Peyronie’s disease and provides in-depth information on plaque size and location, as well as the structural abnormalities in the corpora.

In this video, we demonstrate a step-by-step protocol and highlight take-home tips and tricks for PDU. This video serves as a resource for clinicians who are seeking to familiarize themselves with the methodology of performing a PDDU.

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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

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The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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