Table 5 Spearman’s correlation coefficients (ρ) between the lung attenuation gradients and participant characteristics (including PFT) (100 participants).
Spearman’s correlation coefficients (ρ) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Age | Sex | Height | Weight | BMI | VC (L) | FVC (L) | VC (% predicted) | FEV1 (L) | FEV1 (% predicted) | FEV1/FVC (%) | TV (L) | RV (L) | FRC (L) | TLC (L) | ||
Supine | Anteroposterior direction | |||||||||||||||
Level of the aortic arch | ||||||||||||||||
Right upper lobe | -0.2103 | 0.1632 | -0.0500 | -0.1993 | -0.2465 | -0.1389 | -0.1344 | -0.1711 | -0.0818 | 0.2573 | -0.0423 | -0.0987 | -0.1594 | -0.0993 | -0.1644 | |
Left upper lobe | -0.0060 | 0.0836 | -0.0513 | -0.0429 | -0.1156 | -0.0427 | -0.0453 | -0.0083 | -0.0482 | 0.0348 | -0.0417 | -0.1559 | -0.1390 | -0.0690 | -0.0855 | |
Level of the inferior pulmonary vein | ||||||||||||||||
Right middle lobe | 0.0274 | 0.0269 | -0.1613 | 0.0522 | 0.1240 | -0.1297 | -0.1294 | -0.0999 | -0.1158 | 0.0378 | -0.0506 | -0.0748 | -0.0399 | -0.1268 | -0.1239 | |
Right lower lobe | -0.0545 | 0.0549 | -0.1311 | -0.0110 | 0.0441 | -0.0862 | -0.0845 | -0.0547 | -0.0696 | 0.0518 | 0.0328 | 0.0034 | -0.1242 | -0.0774 | -0.1277 | |
Left upper lobe | 0.0474 | 0.2560 | -0.2786 | -0.1138 | 0.0075 | -0.3006 | -0.3217 | -0.0953 | -0.3318 | -0.1511 | -0.1705 | -0.1606 | -0.2160 | -0.2644 | -0.3037 | |
Left lower lobe | -0.1240 | 0.2523 | -0.1577 | -0.0561 | -0.0087 | -0.1651 | -0.1809 | -0.0822 | -0.1336 | 0.1431 | 0.0648 | -0.1815 | -0.1985 | -0.1476 | -0.2049 | |
Level just above the diaphragm | ||||||||||||||||
Right lower lobe | -0.0989 | 0.1919 | -0.2013 | -0.1895 | -0.1135 | -0.1665 | -0.1783 | -0.0543 | -0.1556 | 0.0055 | 0.0347 | -0.1205 | -0.1448 | -0.0748 | -0.1975 | |
Left lower lobe | -0.1698 | 0.1212 | -0.1301 | -0.0599 | -0.0393 | -0.1056 | -0.1087 | -0.1330 | -0.0881 | 0.0857 | -0.0405 | -0.1170 | -0.1942 | -0.1924 | -0.1634 | |
Craniocaudal direction | ||||||||||||||||
Right lower lobe | 0.1048 | -0.0799 | -0.0833 | 0.0484 | 0.1005 | -0.0255 | -0.0456 | 0.0182 | -0.0083 | 0.0556 | 0.0543 | -0.0923 | -0.0636 | -0.0658 | -0.0242 | |
Left lower lobe | 0.1037 | -0.2067 | 0.1213 | 0.1024 | 0.0609 | 0.2088 | 0.1973 | 0.2308 | 0.2126 | 0.0350 | 0.2569 | 0.1562 | 0.1173 | 0.2127 | 0.1950 | |
Standing | Anteroposterior direction | |||||||||||||||
Level of the aortic arch | ||||||||||||||||
Right upper lobe | 0.1022 | -0.0888 | 0.0187 | 0.0041 | 0.0127 | 0.0624 | 0.0739 | 0.1065 | 0.0836 | -0.0128 | 0.1017 | 0.0933 | 0.1497 | 0.1070 | 0.1049 | |
Left upper lobe | 0.0945 | -0.1352 | 0.2214 | 0.0796 | -0.0795 | 0.2092 | 0.1950 | 0.1868 | 0.1525 | -0.0682 | 0.0882 | 0.1475 | 0.2313 | 0.2619 | 0.2422 | |
Level of the inferior pulmonary vein | ||||||||||||||||
Right middle lobe | 0.2498 | 0.1241 | -0.2575 | -0.0714 | 0.0972 | -0.2860 | -0.2872 | -0.1410 | -0.2875 | -0.0541 | -0.0378 | -0.0916 | -0.1346 | -0.2531 | -0.2609 | |
Right lower lobe | -0.0882 | -0.0858 | 0.0647 | 0.0133 | -0.0252 | 0.1248 | 0.1291 | 0.0071 | 0.1432 | 0.0602 | 0.0515 | 0.1060 | 0.0488 | 0.0953 | 0.1046 | |
Left upper lobe | -0.0197 | 0.0204 | 0.0232 | -0.0384 | -0.0959 | -0.0263 | -0.0196 | -0.0526 | 0.0079 | 0.0417 | 0.0198 | 0.0184 | -0.0787 | -0.0475 | -0.0353 | |
Left lower lobe | 0.0022 | -0.0284 | 0.1053 | 0.2335 | 0.1994 | 0.0727 | 0.0582 | 0.0250 | 0.0379 | -0.1084 | -0.0543 | 0.0082 | 0.0217 | -0.0323 | 0.0641 | |
Level just above the diaphragm | ||||||||||||||||
Right lower lobe | 0.1367 | -0.0785 | 0.0297 | -0.0192 | -0.0365 | -0.0392 | -0.0424 | -0.0579 | -0.0276 | -0.0653 | -0.0035 | 0.0104 | 0.3165 | 0.0786 | 0.0320 | |
Left lower lobe | -0.2468 | -0.1131 | 0.0662 | 0.0471 | 0.0265 | 0.1782 | 0.1655 | 0.0015 | 0.1678 | -0.0218 | -0.0377 | -0.0655 | 0.0153 | 0.0843 | 0.1322 | |
Craniocaudal direction | ||||||||||||||||
Right lower lobe | 0.3165 | 0.0682 | -0.2758 | 0.1436 | 0.3238 | -0.2312 | -0.2493 | 0.0487 | -0.2440 | -0.0465 | 0.1161 | -0.1500 | -0.2764 | -0.3083 | -0.2767 | |
Left lower lobe | 0.2422 | -0.0181 | -0.1727 | 0.1689 | 0.3072 | -0.1614 | -0.1659 | 0.0125 | -0.1564 | -0.0427 | 0.0709 | -0.0352 | -0.1849 | -0.2464 | -0.1866 | |
