This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Technical points

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Pulsed doppler enables the determination of blood velocity at any point along the path of the beam and so is useful in locating a defect.

Continuous wave doppler is better for high velocity jets as seen in aortic stenosis.

Real-time colour doppler displays a colour representation of doppler shifts over a moving ultrasound image. Trained observers can quickly distinguish the patterns of normal and abnormal blood flow.

Practically, pressure gradients can be estimated from the determination of jet velocity:

Pressure gradient = 4 x peak velocity^2

(Pressure in mmHg and velocity in m/s)


Related pages

Create an account to add page annotations

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.