Table 4.
Magnetic resonance features of common benign parotid gland tumors.
| Warthin Tumors | Pleomorphic Adenomas | Contralateral Parotid | |||||
|---|---|---|---|---|---|---|---|
| Magnetic Resonance Parameters | Median | Interquartile Range | Median | Interquartile Range | Median | Interquartile Range | |
| ADC 10−3 mm2/s | 0.68 | 0.1 | 1.32 | 0.25 | 0.84 | 0.21 | |
| IVIM | D 10−3 mm2/s | 0.63 | 0.17 | 1.19 | 0.53 | 0.71 | 0.12 |
| D*10−3 mm2/s | 135.9 | 145.5 | 47.05 | 20.7 | 117.76 | 41.89 | |
| FP % | 24.8 | 8.5 | 34.4 | 14.5 | 23.6 | 8.3 | |
| Permeability | Ktrans min−1 | 0.41 | 0.29 | 0.17 | 0.34 | 0.13 | 0.14 |
| Kep min−1 | 2.49 | 1.04 | 0.31 | 0.81 | 1.22 | 0.49 | |
| Ve | 0.16 | 0.1 | 0.62 | 0.76 | 0.12 | 0.09 | |
| iAUC | 0.27 | 0.11 | 0.24 | 0.38 | 0.14 | 0.15 | |
| No of lesions | No of lesions | ||||||
| TIC | Type A | 0 | 19 | ||||
| Type B | 29 | 1 | |||||
| Type C | 2 | 7 | |||||
ADC: Apparent Diffusion Coefficient; IVIM: Incoherent Voxel Motion; D: pure diffusion coefficient; D*: pseudo-diffusion coefficient; FP: fraction perfusion; Ktrans: transfer constant; Kep: reflux constant; Ve: extra-vascular extra-cellular volume fraction; iAUC: initial area under curve in 60 s; TIC: Time Intensity Curve.