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Inter‐observer variability of portal hemodynamics measured by Doppler ultrasound on three different locations of portal vein
Author(s) -
Tai DarIn,
Chuah SengKee,
Chen ChienLin,
Lo Sing Kai,
Changchien Chisin,
Li IngTzu
Publication year - 1996
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/(sici)1097-0096(199602)24:2<61::aid-jcu2>3.0.co;2-i
Subject(s) - medicine , portal vein , hemodynamics , doppler ultrasound , ultrasound , radiology , portal venous pressure , doppler effect , right gastric vein , lower limbs venous ultrasonography , vein , hepatic portal vein , portal venous system , portal hypertension , physics , cirrhosis , astronomy
Doppler ultrasound is a noninvasive modality for portal hemodynamic study. However, inter‐observer variability has been observed. This study has investigated ways to produce less inter‐observer variability. Doppler ultrasound portal vein hemodynamic studies were carried out by three well‐trained specialists on 20 healthy hospital staff members. The intra‐hepatic, first branch, right portal vein, the hilar portal vein, and the extra‐hepatic portal vein were chosen for study. With respect to the diameter of portal veins, a significant inter‐observer variability was found for the first branch right portal vein and the extra‐hepatic portal vein, but not for the hilar portal vein. For maximal portal vein velocity studies, inter‐observer variability was not found at any location. A significant failure rate was noted for the measurement of extra‐hepatic portal vein velocity. Only 8 volunteers had complete data from all of the three investigators. A significant variability was also noted for the average velocity of extra‐hepatic portal vein. We conclude that Doppler ultrasound hemodynamic studies of the hilar portal vein has the most acceptable inter‐observer variability and thus should be used for longitudinal portal hemodynamic studies. © 1996 John Wiley & Sons, Inc.