Table 3. Correlation between Perfusion Parameters from IVIM and DCE-MRI in Tumors and Normal Muscles.
Tumor | Masseter Muscle | |||||||
---|---|---|---|---|---|---|---|---|
f | D* | f | D* | |||||
r | P | r | P | r | P | r | P | |
Wash-in | −0.240 | 0.309 | −0.233 | 0.322 | −0.495 | 0.027 | −0.020 | 0.935 |
Emax | 0.081 | 0.735 | 0.192 | 0.418 | 0.228 | 0.334 | 0.286 | 0.222 |
Tmax | −0.112 | 0.636 | −0.078 | 0.744 | −0.171 | 0.470 | −0.351 | 0.129 |
AUC60 | 0.142 | 0.549 | 0.156 | 0.505 | 0.268 | 0.254 | 0.246 | 0.295 |
AUCw | 0.080 | 0.739 | 0.197 | 0.406 | 0.237 | 0.315 | 0.262 | 0.265 |
For definitions of indicated parameters please refer to Imaging Processing section of Materials and Methods. Unit for D* value is × 10-3 mm2/s. Unit for Tmax is second. AUCw = whole area under the curve, AUC60 = the initial 60-second area under the curve, DCE-MRI = dynamic contrast-enhanced MR imaging, Emax = the maximum amplitude of enhancement, IVIM = intravoxel incoherent motion, Tmax = the time at which Emax occurs