Influence of IV Contrast Administration on CT Measures of Muscle and Bone Attenuation: Implications for Sarcopenia and Osteoporosis Evaluation

摘要: OBJECTIVE. The objective of our study was to characterize enhancement muscle and bone that occurs on standardized four-phase contrast-enhanced CT. MATERIALS AND METHODS. Two musculoskeletal radiologists reviewed abdominal CT scans obtained with IV contrast material. psoas area measured, the mean attenuation (in Hounsfield units) recorded for aorta, muscles, posterior paraspinal L4 vertebral body. measures were compared between anatomic regions imaging phases paired t test; associations examined Pearson correlation coefficient (R). RESULTS. included 201 patients (97 men, 104 women; age, 57.7 ± 12.5 [SD] years). Subject age inversely correlated unenhanced in (p < 0.001). enhanced significantly 0.001) at all three pha...