The parameters related with ultrasound-guided MWA
| Parameter | All | ALBI grade 1 | ALBI grade 2 | P |
| Patients, n | 183 | 95 | 88 | |
| Antenna number | 2 | 2 | 2 | 1.000b |
| Ablation points | 2.4 (27) | 2.2 (15) | 2.5 (17) | 0.612a |
| Ablation time (s)* | 558.3±23.1 (478600) | 592.5±21.1 (500600) | 537.1±11.3 (478600) | 0.328a |
| Ablation power (W) | 55 (4560) | 55 (4560) | 50 (4560) | 0.772a |
| Hydrodissection technology | 0.256b | |||
| Yes | 55 (30.1) | 25 (26.3) | 30 (34.1) | |
| No | 128 (69.9) | 70 (73.7) | 58 (65.9) | |
| CEUS guidance | 0.530b | |||
| Yes | 32 (17.5) | 15 (15.8) | 17 (19.3) | |
| No | 151 (82.5) | 80 (84.2) | 71 (80.7) | |
| 3D visualization preoperative plan | 0.757b | |||
| Yes | 48 (26.2) | 24 (25.3) | 24 (27.3) | |
| No | 135 (73.8) | 71 (74.7) | 64 (72.7) | |
| Sessions | 0.031b | |||
| 1 | 165 (90.2) | 90 (94.7) | 75 (85.2) | |
| > 1 | 18 (9.8) | 5 (5.3) | 13 (14.8) |
Unless otherwise indicated data are number of patients, with percentage in parentheses. a Student t test; b Pearson χ2-test; * Data are means SD ± mean; Data are medians, with data range. MWA, microwave ablation ALBI, albumin- bilirubin.