Effects of Contrast Phases on Automated Measurements of Muscle Quantity and Quality Using CT
Dong Wook Kim, Kyung Won Kim, Yousun Ko, Taeyong Park, Jeongjin Lee, Jung Bok Lee, Jiyeon Ha, Hyemin Ahn, Yu Sub Sung, Hong‐Kyu Kim
Abstract
OBJECTIVE: Muscle quantity and quality can be measured with an automated system on CT. However, the effects of contrast phases on the muscle measurements have not been established, which we aimed to investigate in this study. MATERIALS AND METHODS: tests. Bland-Altman analysis was used to evaluate the inter-phase variability between PVP and other phases. Based on the cutoffs for low muscle quantity and quality, the counts of individuals who scored lower than the cutoff values were compared between PVP and other phases. RESULTS: ≤ 0.002). CONCLUSION: SMA was less affected by the contrast phases. However, the muscle quality measurements changed with the contrast phases to greater extents and would require a standardization of the contrast phase for reliable measurement.