Table 3 CT-perfusion parameters by UICC stage (seventh edition) and PET positivity of lymph nodes
CT-perfusion parameters | UICC stage | PET-positive lymph nodes | ||||||
|---|---|---|---|---|---|---|---|---|
All tumors ( n = 46) | I ( n = 6) | II ( n = 10) | III (n = 12) | IV ( n = 18) | p | No (n = 17) | Yes ( n = 29) | p |
 Blood flow (mL/100 mL min-1), mean ± SD | 30.0 ± 17.8 | 42.0 ± 44.4 | 37.8 ± 13.0 | 32.2 ± 12.9 | 0.61 | 45.7 ± 33.6 | 29.5 ± 12.0 | 0.02 |
 Blood volume (mL/100 mL), mean ± SD | 7.3 ± 6.1 | 7.5 ± 4.4 | 9.7 ± 9.2 | 8.4 ± 5.4 | 0.82 | 11.1 ± 8.4 | 6.8 ± 4.1 | 0.02 |
 Mean transit time (s), mean ± SD | 12.8 ± 5.8 | 13.8 ± 4.2 | 13.7 ± 5.0 | 15.2 ± 4.1 | 0.79 | 12.9 ± 4.6 | 14.9 ± 4.4 | 0.09 |
NSCLC ( n  = 41) | I ( n  = 6) | II ( n  = 9) | III ( n  = 11) | IV ( n  = 15) | p | No ( n  = 17) | Yes ( n  = 24) | p |
 Blood flow (mL/100 mL min-1), mean ± SD | 30.0 ± 17.8 | 43.0 ± 47.0 | 37.8 ± 13.0 | 32.2 ± 12.9 | 0.70 | 45.7 ± 33.6 | 28.3 ± 11.5 | 0.01 |
 Blood volume (mL/100 mL), mean ± SD | 7.3 ± 6.1 | 7.8 ± 4.5 | 10.0 ± 9.6 | 8.0 ± 5.3 | 0.84 | 11.1 ± 8.4 | 6.5 ± 3.9 | 0.01 |
 Mean transit time (s), mean ± SD | 12.8 ± 5.8 | 13.5 ± 4.3 | 14.3 ± 4.6 | 15.6 ± 4.3 | 0.72 | 12.9 ± 4.6 | 15.4 ± 4.3 | 0.04 |