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KMID : 1188320160100020275
Gut and Liver
2016 Volume.10 No. 2 p.275 ~ p.282
Factors Influencing the Diagnostic Accuracy of Acoustic Radiation Force Impulse Elastography in Patients with Chronic Hepatitis B
Park Mi-Sung

Kim Sun-Wook
Yoon Ki-Tae
Kim Seung-Up
Park Soo-Young
Tak Won-Young
Kweon Young-Oh
Cho Mong
Kim Beom-Kyung
Park Jun-Yong
Kim Do-Young
Ahn Sang-Hoon
Han Kwang-Hyub
Abstract
Background/Aims:To determine factors predictive of discordance in staging liver fibrosis using liver biopsy (LB) and acoustic radiation force impulse (ARFI) elastography in patients with chronic hepatitis B (CHB).

Methods:Consecutive patients with CHB who underwent LB and ARFI elastography on the same day from November 2010 to March 2013 were prospectively recruited from three tertiary hospitals.

Results:We analyzed 105 patients (median age of 47 years). The F0?1, F2, F3, and F4 fibrosis stages were identified in 27 (25.7%), 27 (25.7%), 21 (20.0%), and 30 (28.6%) patients, respectively. The areas under the receiver operating characteristics curves for ARFI elastography in assessing ¡ÃF2, ¡ÃF3, and F4 was 0.814, 0.848, and 0.752, respectively. The discordance of at least one stage between LB and ARFI was observed in 68 patients (64.8%) and of at least two stages in 16 patients (15.2%). In a multivariate analysis, advanced fibrosis stage (F3?4) was the only factor that was negatively correlated with one-stage discordance (p=0.042). Moreover, advanced fibrosis stage was negatively (p=0.016) correlated and body mass index (BMI) was positively (p=0.006) correlated with two-stage discordance.

Conclusions:Advanced fibrosis stage (F3?4) was a predictor of nondiscordance between LB and ARFI elastography; BMI also influenced the accuracy of ARFI elastography.
KEYWORD
Acoustic radiation force impulse, Discordance, Liver cirrhosis, Hepatitis B, chronic
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