Intra- and Interoperator Reproducibility of Acoustic Radiation Force Impulse (ARFI) Elastography-Preliminary Results
- 作者：Simona Bota ; bota_simona1982@yahoo.com ; Ioan Sporea ; Roxana Sirli ; Alina Popescu ; Mirela Danila ; Dan Costachescu
- 关键词：ARFI elastography ; Intraoperator reproducibility ; Interoperator reproducibility ; Liver stiffness
- 刊名：Ultrasound in Medicine and Biology
- 出版年：2012
- 期刊代码：82_03015629
- 类别：ph
- 出版时间：July, 2012
- 卷：38
- 期：7
- 页码：1103-1108
- 文件大小：215 K
摘要
Our study assessed acoustic radiation force impulse (ARFI) reproducibility and the factors influencing it. The intra- and interoperator reproducibility were studied in 33 and 58 patients, respectively. Intraclass correlation coefficient (ICC) was used to assess ARFI reproducibility. The overall intraoperator agreement was better than the interoperator one: ICC 0.90 vs. ICC 0.81. The correlation of repeated ARFI measurements was higher, but not significantly so, in cases in which intraoperator reproducibility was assessed compared with the ones in which interoperator reproducibility was studied: r聽=聽0.848 vs. r聽=聽0.694 (p聽=聽0.08). For both intra- and interoperator reproducibility, the ICCs were smaller in women vs. men (0.88 vs. 0.91 and 0.67 vs. 0.86, respectively), in patients with high body mass index (BMI) 鈮?5 kg/m虏 vs. <25 kg/m虏 (0.88 vs. 0.91 and 0.79 vs. 0.82, respectively), in patients with ascites vs. no ascites (0.80 vs. 0.93 and 0.78 vs. 0.84, respectively) and in noncirrhotic vs. cirrhotic patients (0.77 vs. 0.82 and 0.70 vs. 0.83, respectively).