A Doppler ultrasound is a quick, painless way to check for problems with blood flow such as deep vein thrombosis (DVT). Find out what it is, when you need one, and how it’s done.

Table 2 Frequency of extrapenile (carotid and/or lower limbs) arterial echo-color Doppler abnormalities in patients with erectile dysfunction (ED) due to penile artery insufficiency ...