vascular
Estimate of stenosis of artery by flow velocity in peripheral arterial occlusive disease
Severity of a stenosis can be estimated by measuring of peak systolic velocity (PSV) in the stenosis and proximal to it and by the appearance of the waveform.
| Luminal narrowing | PSV stenosis / PSV proximal | Description |
|---|---|---|
| 0 - 49% | <2 | triphasic waveform, spectral broadening, increased enddiastolic flow velocity in stenosis close to 49% |
| 50 - 74% | ≥2 |
Updated 16/11/2013 20:52 by Lambert
