Table 4.
RVent and JVent median (interquartile) values of COPD patient cohort (n = 36).
| Description | RVent* | JVent | RVent* vs. JVent |
|---|---|---|---|
| ANTs | 0.17 (0.11–0.22) | 0.16 (0.12–0.21) | 1.47e−01 (n.s.) |
| F-REG | 0.13 (0.08–0.18) | 0.22 (0.16–0.32) | 7.39e−27 (****) |
| M-REG | 0.04 (0.02–0.06) | 0.08 (0.02–0.15) | 4.16e−09 (****) |
| Omnibus | 1.13e−65 (****) | 5.36e−44 (****) | — |
| ANTs vs. F-REG | 7.39e−27 (****) | 7.84e−27 (****) | — |
| ANTs vs. M-REG | 5.37e−27 (****) | 2.14e−13 (****) | — |
| F-REG vs. M-REG | 8.00e−27 (****) | 2.21e−25 (****) | — |
Except for ANTs, all values were significantly different in regard to method (RVent vs. JVent) and registration algorithm. p ≤ 0.05 (*), p ≤ 0.01 (**), p ≤ 0.001 (***), p ≤ 0.0001 (****). Please note that the numbers displayed in this table are rounded to two decimal places. As a result, different values may appear identical despite minor differences in their actual values. ANTs: advanced normalization tools, F-Reg: Forsberg registration, M-Reg: Matlab registration, RVent*: filtered regional ventilation, JVent: Jacobian determinant ventilation.