Table 4. Comparison of DWI and DTI parameters between DCIS and IBC.
| Parameter | DCIS (n=11) | IBC (n=53) | P |
|---|---|---|---|
| ADC | 1.28±0.20 | 1.03±0.22 | 0.001 |
| FA | 0.13±0.04 | 0.16±0.09 | 0.288 |
| VR | 2.35±1.29 (×10−2) | 4.45±7.95 (×10−2) | 0.387 |
| RA | 0.11±0.04 | 0.14±0.09 | 0.301 |
| Davg | 1.54±0.19 | 1.16±0.24 | <0.001 |
| EA | 0.40±0.05 | 0.51±0.07 | <0.001 |
Abbreviations: DWI, diffusion weighted imaging; DTI, diffusion-tensor imaging; DCIS, breast ductal carcinoma in situ; IBC, invasive breast carcinoma; ADC, apparent diffusion coefficient; FA, fractional anisotropy; VR, volume ratio; RA, relative anisotropy; Davg, directionally-averaged mean diffusivity; EA, exponential attenuation