Doppler waveforms
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Doppler waveforms are often misinterpreted and/or overlooked. They can provide great deal of information if carefully understood.
Radiographic features
Ultrasound
Doppler
The three basic arterial waveforms are 1-2:
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triphasic:
triphasic waveform- forward flow in systole
- reverse flow in late systole / early diastole
- forward flow in late diastole
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biphasic:
biphasic waveform- forward flow in systole
- reverse flow in diastole
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monophasic:
monophasic waveform- single-
highlow velocity -
lowhigh velocity
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Triphasic flow is considered normal, and monophasic flow is considered abnormal. Most authors consider biphasic flow abnormal, although some authors classify it as a normal waveform 2.
-<strong>triphasic: </strong><a href="/articles/triphasic-waveform">triphasic waveform</a><ul>- +<strong>triphasic: </strong><ul>
-<strong>biphasic: </strong><a href="/articles/biphasic-waveform">bi</a><a href="/articles/triphasic-waveform">phasic waveform</a><ul>- +<strong>biphasic:</strong><ul>
-<strong>monophasic</strong>: <a href="/articles/monophasic-waveform">monophasic waveform</a> - single phase with slow (<a href="/articles/dampened-flow">dampened flow</a>) acceleration/deceleration<ul>-<li>high velocity</li>- +<strong>monophasic: </strong>single phase with slow (<a href="/articles/dampened-flow">dampened flow</a>) acceleration/deceleration<ul>
- +<li>high velocity</li>
-</ul><p>Triphasic flow is considered normal, and monophasic flow is considered abnormal. Most authors consider biphasic flow abnormal, although some authors classify it as a normal waveform <sup>2</sup>. </p>- +</ul><p>Triphasic flow is considered normal and monophasic flow is considered abnormal. Most authors consider biphasic flow abnormal, although some authors classify it as a normal waveform <sup>2</sup>. </p>
Images Changes:
Image 1 Ultrasound (Longitudinal) ( create )
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