Table 2.
Imaging Measures Derived
| Measure type | CT Measures | Men | Women | PET Measures | Men | Women |
|---|---|---|---|---|---|---|
| Volume Measures (Liters) | Body | 20.8 (18.4, 33.6) | 22.6 (16.0, 30.4) | N/A | N/A | |
| Muscle | 7.5 (6.2, 9.6) | 4.8 (4.2, 6.2) | Muscle MAV | 0.2 (0, 0.8) | 0.2 (0, 1.6) | |
| IMAT | 1.9 (0.9, 2.6) | 1.4 (0.96, 3.1) | IMAT MAV | 0.1 (0, 0.3) | 0.1 (0, 0.6) | |
| Muscle Measures (HU or SUB) | Max | 1026 (491, 3071) | 981 (363, 1124) | Max | 4.7 (3.1, 5.8) | 4.5 (3.4, 5.5) |
| Mean | 29.3 (14.4, 49.4) | 21.9 (4.8, 37.3) | Mean | 0.8 (0.7, 1.2) | 1.0 (0.9, 1.2) | |
| SD | 20.3 (14.9, 24.1) | 16.4 (11.2, 23.7) | SD | 0.2 (0.1, 0.4) | 0.3 (0.2, 0.3) | |
| IMAT Measures (HU or SUB) | Mean | −30.3 (−52.5, −14.3) | −31.3 (−53.5, −13.6) | Mean | 0.8 (0.6, 1.2) | 0.9 (0.8, 1.1) |
| SD | 39.3 (18.0, 56.1) | 34.8 (16.3, 61.3) | SD | 0.4 (0.2, 0.5) | 0.4 (0.2, 0.5) |
Data presented is the median with the range in parentheses, and PET measures are using the SUB standardization.
Abbreviations: MAV, Metabolically active volume; IMAT, Intramuscular adipose tissue; HU, Hounsfield Units; SUB, Standardized uptake value normalized by body weight.