Table 2.
Comparison of parameters between benign and malignant soft tissue tumors
| Parameters | Benign group | Malignant group | p value | Cut-off values | Sensitivity (%) | Specificity (%) | Accuracy (%) | AUC |
|---|---|---|---|---|---|---|---|---|
| IVIM DWI | n = 30 | n = 31 | ||||||
| D (µm2/s) | 1415 ± 374 | 1132 ± 500 | 0.015a | ≤1190 | 71 (22/31) | 83 (25/30) | 77 (47/61) | 0.742a |
| Da (µm2/s) | 297 ± 96 | 258 ± 83 | 0.094 | ≤274 | 58 (18/31) | 57 (17/30) | 57 (35/61) | 0.638 |
| f (%) | 101 ± 58 | 83 ± 36 | 0.149 | ≤82 | 55 (17/31) | 57 (17/30) | 56 (34/61) | 0.576 |
| ADC (µm2/s) | 1472 ± 349 | 1170 ± 488 | 0.007a | ≤1310 | 74 (23/31) | 73 (22/30) | 74 (45/61) | 0.752a |
| DCE-MRI | n = 35 | n = 32 | ||||||
| Ktrans (min−1 × 103) | 92 ± 67 | 209 ± 160 | <0.001a | >110 | 81 (26/32) | 77 (27/35) | 79 (53/67) | 0.792a |
| Kep(min−1 × 103) | 311 ± 230 | 737 ± 488 | <0.001a | >368 | 78 (25/32) | 71 (25/35) | 75 (50/67) | 0.817a |
| Ve (%) | 44 ± 28 | 32 ± 17 | 0.043a | ≤35 | 69 (22/32) | 54 (19/35) | 61 (41/67) | 0.616 |
| iAUC (%) | 12 ± 9 | 23 ± 14 | <0.001a | >14 | 72 (23/32) | 69 (24/35) | 70 (47/67) | 0.771a |
AUC, area under the curve; DCE-MRI, Dynamic contrast enhanced magnetic resonance imaging; IVIM DWI, intravoxel incoherent motion diffusion-weighted imaging.
All data are means (±standard deviation).
a
indicates statistical significance.