M Kim1, B-K Kang1, D W Jun2, Y Kim3. 1. Department of Radiology, Hanyang University School of Medicine, Hanyang University Medical Center, Seoul, South Korea. 2. Department of Internal Medicine, Hanyang University School of Medicine, Hanyang University Medical Center, Seoul, South Korea. 3. Department of Radiology, Hanyang University Guri Hospital, Hanyang University, Guri, South Korea. Electronic address: ysookim@hanyang.ac.kr.
Abstract
AIM: To analyse the inter- and intra-observer agreement of liver stiffness value (LSV) using three methods with 3 T magnetic resonance elastography (MRE) and to investigate factors related to LSV difference. MATERIALS AND METHODS: This retrospective study included 147 patients. Two independent observers measured the LSV using three region of interest (ROI) methods: (1) circular ROI with a radius of 1 cm in the right lobe, (2) largest ROI possible, and (3) average value considering the measurement area. The agreement and factors related to difference of LSV were investigated. RESULTS: The intraclass correlation coefficients were excellent at 0.982-0.997 in all methods. The differences between observers for method 1 were significantly larger than those of method 2 or method 3 (p<0.001). The Child-Pugh classification was only related to LSV difference (p<0.001). CONCLUSION: Methods 2 and 3 were significantly more reliable than method 1. The Child-Pugh classification was only related to difference of LSV.
AIM: To analyse the inter- and intra-observer agreement of liver stiffness value (LSV) using three methods with 3 T magnetic resonance elastography (MRE) and to investigate factors related to LSV difference. MATERIALS AND METHODS: This retrospective study included 147 patients. Two independent observers measured the LSV using three region of interest (ROI) methods: (1) circular ROI with a radius of 1 cm in the right lobe, (2) largest ROI possible, and (3) average value considering the measurement area. The agreement and factors related to difference of LSV were investigated. RESULTS: The intraclass correlation coefficients were excellent at 0.982-0.997 in all methods. The differences between observers for method 1 were significantly larger than those of method 2 or method 3 (p<0.001). The Child-Pugh classification was only related to LSV difference (p<0.001). CONCLUSION: Methods 2 and 3 were significantly more reliable than method 1. The Child-Pugh classification was only related to difference of LSV.
Authors: Christopher L Welle; Michael C Olson; Scott B Reeder; Sudhakar K Venkatesh Journal: Radiol Clin North Am Date: 2022-07-15 Impact factor: 1.947