Spectral Waveform Classifications - Video Lesson

Hey, everybody. Welcome back to today's lesson on Doppler ultrasound. This lesson focuses on the three spectral waveform classifications, monophasic, biphasic, and triphasic. Each classification reflects distinct flow characteristics based on the resistance of downstream vascular beds. Additionally, we will explore how technical adjustments, such as scale and gate size, impact spectral waveforms. Let's get started. Spectral waveforms can be classified as monophasic, biphasic, and triphasic. Remember, spectral waveforms are graphic representations of blood flow velocity over time. Each spectral waveform displays peak systolic velocity or PSV, end diastolic velocity, EDV, and flow direction. PSV is the highest velocity in the systolic cycle, while EDV is the velocity at the end of the diastolic cycle. Let's take a look at monophasic waveforms first. Monophasic waveforms are