Aug 6, 2025 · Doppler waveforms refer to the morphology of pulsatile blood flow velocity tracings on spectral Doppler ultrasound. Waveforms differ by the vascular bed (peripheral, cerebrovascular, and …

Sep 30, 2024 · The hepatic veins have a characteristic spectral Doppler waveform. Alterations in the normal hepatic vein waveform may reveal or confirm abnormalities in the heart or liver.

Oct 2, 2025 · On Doppler ultrasound, the flow in the ductus venosus has a characteristic triphasic waveform where in a normal physiological situation flow should always be in the forward direction 7 …

The right and the left common femoral veins, the profunda and the superficial femoral veins, the great and the lesser saphenous veins, the popliteal and the proximal calf veins exhibit pulsatile flow pattern …

Anterior and frank approaches used to indirectly evaluate the intra-renal (segmental arcuate and interlobar; upper poles, mid poles and lower poles) arterial spectral Doppler waveforms.

Oct 30, 2025 · Arterial wall compliance can be evaluated with Doppler. The triphasic wave pattern recorded in the radial artery with a clenched fist should normally become biphasic with a resistive …

Aug 14, 2025 · Abu-Yousef M, Milam S, Farner R. Pulsatile Portal Vein Flow: A Sign of Tricuspid Regurgitation on Duplex Doppler Sonography. AJR Am J Roentgenol. 1990;155 (4):785-8. …

A biphasic Doppler trace of the portal vein in the presence of normal hepatic vein Doppler traces usually indicates raised right heart pressures secondary to tricuspid regurgitation.

May 8, 2025 · This study proposed incorporating distal ICA flow velocity information on the conventional carotid Doppler study improving the diagnostic accuracy of PSV 1. <15% stenosis

Feb 20, 2025 · Peak systolic velocity (PSV) is an index measured in spectral Doppler ultrasound. On a Doppler waveform, the peak systolic velocity corresponds to each tall “peak” in the spectrum window 1.