Pulsed Wave vs Continuous Wave Doppler | Echo Physics Basics

Pulse wave or Continuous wave doppler? It comes down to one question: does the number you need depend on WHERE the blood is, or only on HOW FAST it is. PW tells you where. CW tells you how fast. You cannot get both from the same tool, and this video is about why. This video explains: why PW knows the exact depth and CW doesn't, why PW has a strict speed limit and CW has none, why one envelope is hollow and the other fills in, and how to tell which one you're looking at on screen. ⏱ CHAPTERS 0:00 Intro 0:25 PW vs CW overview 2:17 PW vs CW: The toll booth, radar gun analogy 4:40 PW vs CW side by side 7:00 Aliasing — and why it's a PW problem only 10:06 Aliasing example 10:35 Doppler Theory 13:49 How to use PWD to calculate for Stroke Volume 14:47 How to use CWD to calculate peak aortic valve velocity 15:29 Recap 16:11 Outro 🔗 RELATED VIDEOS How to Calculate Stroke Volume & Cardiac Output on Echo    • How to Calculate Stroke Volume & Cardiac O...   📱 APPS Echo Quant — TTE Calculator, if you want these calculations in your pocket on rounds. https://apps.apple.com/us/app/echo-qu... Echodex — TTE Reference Guide https://apps.apple.com/us/app/echodex... Who this is for: cardiology fellows, IM residents, sonographers, and anyone prepping for ASCeXAM or ABIM. Educational content only. Not medical advice, and not a substitute for institutional protocol or formal training. #echocardiography #echophysics #ultrasound