Table 3.
CT numbers in HU of the vascular lumen, epicardial fat, and muscle
| Reconstruction | p value | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Conventional | 40 keV | 55 keV | 70 keV | 85 keV | 100 keV | 115 keV | 130 keV | ||
| CM flow rate [mL/s] | 5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | |
| Proximal RCA | 425 [116.9] | 743.5 [262] | 413.4 [130.6] | 258.7 [80.4] | 188.2 [57.6] | 143.5 [45.2] | 118.1 [38.2] | 102 [36.8] | < 0.001 |
| Distal RCA | 414.9 [143.1] | 606.3 [288.4] | 346 [143.3] | 222.7 [79.1] | 163.9 [59.3] | 130.4 [47.1] | 109.4 [45.2] | 95 [44] | < 0.001 |
| LM | 4451.1 [123] | 828 [252] | 463.5 [128.3] | 284 [69.3] | 205 [50.1] | 160.1 [42.9] | 131.1 [38.2] | 114.8 [38.5] | < 0.001 |
| Distal LAD | 292.5 [135.8] | 413 [244] | 236.3 [134] | 160 [70.9] | 119.8 [55.5] | 94.6 [52.6] | 80 [48.6] | 69.5 [45.3] | < 0.001 |
| Distal LCx | 337.9 [115.5] | 496.1 [265.6] | 279.6 [146.4] | 185.2 [91.5] | 139.8 [63.8] | 116.7 [56.7] | 99 [52.9] | 90.7 [49] | < 0.001 |
| Ascending aorta | 466 [154.1] | 871.9 [246.9] | 486 [130.6] | 301.4 [76.3] | 211.4 [52.3] | 161.4 [40.8] | 130.6 [29.5] | 114.2 [27.3] | < 0.001 |
| Median | 397.4 [131.4] | 691.8 [259.9] | 380.1 [136.4] | 243.2 [77.9] | 172.6 [56.4] | 135.9 [47.5] | 113 [42.1] | 99 [40.1] | < 0.001 |
| Epicardial fat | − 87.1 [28.6] | − 178 [47.6] | − 124 [25.3] | − 101 [19.9] | − 90 [17.3] | − 85 [16.4] | − 81.2 [17.9] | − 78.5 [15.5] | < 0.001 |
| Muscle | 103.4 [36.8] | 163.1 [56.9] | 108 [33.1] | 81.8 [21.3] | 70.5 [15.2] | 63.1 [13.3] | 58.4 [14.1] | 56 [13] | < 0.001 |
| Trabecular bone | 201.8 [100.1] | 481.6 [399.1] | 297,4 [318.2] | 208.5 [236.5] | 169.6 [142.6] | 149 [126] | 138 [112.5] | 130.6 [103] | < 0.001 |
Data are median [IQR]—univariate comparison with the Kruskal-Wallis test. IQR indicates data variability across all patients in the group
CM contrast medium, keV kilo-electronvolt, RCA right coronary artery, LM left main, LAD left anterior descending, LCx left circumflex