Applicability and variability of liver stiffness measurements according to probe position

作者：Ingiliz Patrick^*; Chhay Kim Pav; Munteanu Mona; Lebray Pascal; Ngo Yen; Roulot Dominique; Benhamou Yves; Thabut Dominique; Ratziu Vlad; Poynard Thierry

来源：World Journal of Gastroenterology, 2009, 15(27): 3398-3404.

DOI：10.3748/wjg.15.3398

• Fibroscan
• Fibrotest
• Liver fibrosis
• Variability
• Concordance

AIM: To investigate the liver stiffness measurement (LSM) applicability and variability with reference to three probe positions according to the region of liver biopsy.
METHODS: The applicability for LSM was defined as at least 10 valid measurements with a success rate greater than 60% and an interquartile range/median LSM < 30%. The LSM variability compared the inter-position concordance and the concordance with FibroTest.
RESULTS: Four hundred and forty two consecutive patients were included. The applicability of the anterior position (81%) was significantly higher than that of the reference (69%) and lower positions (68%), (both P = 0.0001). There was a significant difference (0.5 kPa, 95% CI 0.13-0.89; P < 0.0001) between mean LSM estimated at the reference position (9.3 kPa) vs the anterior position (8.8 kPa). Discordance between positions was associated with thoracic fold (P = 0.008). The discordance rate between the reference position result and FibroTest was higher when the 7.1 kPa cutoff was used to define advanced fibrosis instead of 8.8 kPa (33.6% vs 23.5%, P = 0.03).
CONCLUSION: The anterior position of the probe should be the first choice for LSM using Fibroscan, as it has a higher applicability without higher variability compared to the usual liver biopsy position.

• 出版日期2009-7-21