Doppler Ultrasonography in Portal Vein Assessment
Summary
Doppler ultrasonography has emerged as a cornerstone in the non-invasive evaluation of portal venous haemodynamics. By combining real-time B-mode imaging with Doppler flow measurement, clinicians can visualise the portal vein’s anatomical course and quantify intraluminal flow velocities, waveforms and indices. These measurements enable assessment of portal vein diameter, peak systolic velocity and flow direction, which are critical parameters in diagnosing portal hypertension, monitoring liver cirrhosis progression and guiding interventions such as transjugular intrahepatic portosystemic shunt placement. Technological refinements—including high-frequency transducers, advanced signal processing and three-dimensional Doppler modalities—have enhanced spatial resolution and sensitivity to low-velocity flow, facilitating earlier detection of subclinical changes. The technique’s safety profile, accessibility at the bedside and cost-effectiveness underpin its global adoption, from tertiary centres in Europe to resource-limited settings. Ongoing research focuses on quantitative indices of pulsatility and congestion, contrast-enhanced Doppler for microvascular assessment and integration with elastography, collectively advancing personalised management of portal venous disorders.
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Doppler Ultrasonography in Portal Vein Assessment publication trend
The graph below shows the total number of articles in doppler ultrasonography in portal vein assessment across all publications each year (not limited to Nature Index journals).
Technical terms
Doppler ultrasonography: An imaging technique combining ultrasound and Doppler effect to visualise blood vessels and measure flow velocities.
Portal vein diameter (PVD): The transverse measurement of the portal vein lumen on B-mode imaging, used to assess dilatation or compression.
Peak systolic velocity (PSV): The highest blood flow velocity recorded during ventricular systole within the portal vein.
Portal venous pulsatility index (PVI): A ratio quantifying flow velocity variation within the cardiac cycle, indicative of downstream resistance.
Spectral widening: Broadening of the Doppler waveform envelope, reflecting flow turbulence or increased venous pressure.
References
- Normal Portal Vein Diameter (PVD) and Peak Systolic Velocity (PSV) in Healthy Iranian Children. Iranian Journal of Pediatrics (2024).
- Sonographic assessment of the portal vein diameter in apparently healthy adults in a Northern Nigerian population. African Health Sciences (2016).
- Correlation Of Portal Vein Pulsatility Pattern And Severity Of Liver Disease In Patients With Cirrhosis And Portal Hypertension. Journal of Nobel Medical College (2013).
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