Table 4. Comparison of IVIM parameters between early and advanced stage TETs.
| Parameters | Early stage (n = 33) | Advanced stage (n = 44) | t | P value |
|---|---|---|---|---|
| First reading | ||||
| ADCmb (×10−3 mm2 /sec) | 1.41 ± 0.46 | 1.06 ± 0.31 | 3.747 | < 0.001 |
| D (×10−3 mm2/sec) | 0.93 ± 0.30 | 0.64 ± 0.23 | 4.708 | < 0.001 |
| D* (×10−3 mm2 /sec) | 8.19 ± 4.70 | 4.34 ± 2.24 | 4.346 | < 0.001 |
| f | 0.38 ± 0.18 | 0.43 ± 0.17 | 1.188 | 0.239 |
| Second reading | ||||
| ADCmb (×10−3 mm2 /sec) | 1.47 ± 0.45 | 1.08 ± 0.31 | 4.218 | < 0.001 |
| D (×10−3 mm2/sec) | 1.00 ± 0.34 | 0.63 ± 0.20 | 5.581 | < 0.001 |
| D* (×10−3 mm2 /sec) | 8.62 ± 5.50 | 4.77 ± 1.91 | 3.846 | < 0.001 |
| f | 0.46 ± 0.19 | 0.44 ± 0.16 | 0.460 | 0.647 |
The data are expressed as means ± standard deviation. ADCmb = ADC calculated using mono-exponential model DWI (multi b-values: 0 - 1200 sec/mm2); D = ADCslow or pure diffusion coefficient; D* = ADCfast or pseudo-diffusion coefficient; f = perfusion fraction.