Pulsed Wave (PW) and Spectral Analysis Optimization

Flashcards covering the optimization and tools for Pulsed Wave Doppler and Spectral Analysis based on lecture slides.

Pulsed Wave (PW) Doppler Beam Steering

The beam should be steered with respect to the angle of the vessel.

Sample Volume/Gate Placement

Should be placed in the center of the vessel with the "arms" parallel to flow.

PW Tools

Includes steer, SV/gate, and angle correct.

Spectral Analysis Tools

Includes gain, scale, baseline, and calipers.

Scale Setting

Should be set so that the entire waveform can be visualized.

Baseline Setting

Ideally set high enough to allow some space below the waveform.

Acoustic Window

The clear space visualized under a waveform if the vessel is normal; no spectral broadening should be present.

Spectral Broadening

The loss of the acoustic window in a Doppler waveform.

PSV

Peak Systolic Velocity; a measurement derived from spectral analysis.

EDV

End Diastolic Velocity; a measurement derived from spectral analysis.

Angle Correct

A tool used to align the Doppler cursor with the direction of flow, often set to $60^{\text{o}}$.

SV/Gate Size

The longitudinal dimension of the sample volume, with examples in the notes ranging from $0.5\text{mm}$ to $3.0\text{mm}$.