Table 4.
Comparison and diagnostic performance of parameters between benign and malignant non-myxoid soft tissue tumors
| Parameter | Benign group | Malignant group | p value | Cut-off values | Sensitivity (%) | Specificity (%) | Accuracy (%) | AUC |
|---|---|---|---|---|---|---|---|---|
| IVIM DWI | n = 19 | n = 23 | ||||||
| D (µm2/s) | 1294 ± 249 | 938 ± 296 | <0.001a | ≤1183 | 87 (20/23) | 79 (15/19) | 83 (35/42) | 0.831a |
| Da (µm2/s) | 312 ± 114 | 266 ± 92 | 0.152 | ≤279 | 65 (15/23) | 57 (11/19) | 62 (26/42) | 0.634 |
| f (%) | 114 ± 61 | 88 ± 36 | 0.081 | ≤88 | 60 (14/23) | 68 (13/19) | 64 (27/42) | 0.638 |
| ADC (µm2/s) | 1365 ± 238 | 979 ± 300 | <0.001a | ≤1261 | 87 (20/23) | 73 (14/19) | 81 (34/42) | 0.835a |
| DCE-MRI | n = 24 | n = 24 | ||||||
| Ktrans (min−1 × 103) | 105 ± 72 | 238 ± 172 | 0.001a | >110 | 87 (21/24) | 66 (16/24) | 77 (37/48) | 0.798a |
| Kep(min−1 × 103) | 333 ± 207 | 832 ± 510 | <0.001a | >358 | 87 (21/24) | 66 (16/24) | 77 (37/48) | 0.855a |
| Ve (%) | 38 ± 22 | 31 ± 18 | 0.303 | ≤33 | 62 (15/24) | 50 (12/24) | 56 (24/48) | 0.584 |
| iAUC (%) | 14 ± 10 | 26 ± 15 | 0.002a | >12 | 87 (21/24) | 62 (15/24) | 75 (36/48) | 0.766a |
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 the statistical significance.