Doppler Overview
Overview
This lecture introduces Doppler ultrasound, including the basic principles behind blood flow measurement. It covers colour flow imaging, spectral Doppler, waveform interpretation, optimisation techniques and common sources of error.
Learning Outcomes
By the end of these lectures, you should be able to:
- Explain the principles of colour and spectral Doppler ultrasound and the factors that influence Doppler signals and velocity measurements.
- Optimise pulsed-wave and colour Doppler imaging through appropriate selection and adjustment of imaging parameters and scanning techniques.
- Acquire and optimise spectral Doppler waveforms through appropriate beam positioning, sample volume placement and angle correction.
- Recognise Doppler artefacts and optimisation challenges, including aliasing, inappropriate gain settings and inadequate beam-flow angles, and implement corrective actions.
- Critically evaluate Doppler waveforms and assess the influence of image quality, artefacts and operator technique on the reliability and reproducibility of Doppler ultrasound measurements.
Lecture Details
- Duration: 47 minutes
- Series: Ultrasound Physics and Equipment
- Provided by: Colin Deane, King’s College London