Table 2.
Comparison of ADC, D, D*, f, Kapp, and Dapp values of lung tumors with low and high Ki-67
| Parameters | Low Ki-67 (n = 21) | High Ki-67 (n = 30) | P |
|---|---|---|---|
| ADC (×10-3 mm2/s) | 1.33 ± 0.30 | 1.11 ± 0.26 | 0.012 |
| D (×10-3 mm2/s) | 1.22 ± 0.30 | 0.90 ± 0.21 | 0.000 |
| D* (× 10-3 mm2/s) | 23.1 ± 12.7 | 16.7 ± 8.07 | 0.031 |
| f (%) | 30.3 ± 15.2 | 26.9 ± 16.5 | 0.48 |
| Kapp | 0.64 ± 0.15 | 0.78 ± 1.98 | 0.011 |
| Dapp (× 10-3 mm/s) | 1.91 ± 0.51 | 1.74 ± 0.68 | 0.34 |
Data are mean ± standard deviation (SD). ADC: apparent diffusion coefficient; D: true diffusion coefficient, D* value: the perfusion-related pseudodiffusion coefficient; f: perfusion fraction; Kapp: diffusion kurtosis; Dapp: diffusivity.