Table 2. Per Nodule Comparison of Assessed Ablation Zones between Concordant and Discordant Groups Using Visual and Software-Assisted Initial Inspection in 88 HCCs.
| Agreement between Two Methods (n = 75) | Disagreement between Two Methods (n = 13) | P | |
|---|---|---|---|
| Results of two inspections before second treatment (%) | |||
| Sufficient margin on both inspections | 88.0 (66/75) | 0 (0/13) | - |
| Insufficient margin on both inspections 12.0 (9/75) | 0 (0/13) | - | |
| Insufficient margin only on visual inspection | 0 (0/75) | 38.5 (5/13) | - |
| Insufficient margin only on software inspection | 0 (0/75) | 61.5 (8/13) | - |
| Pre-RFA MRI scanner (1.5T vs. 3T) | 27:39 | 7:6 | 0.58 |
| Lesion size (cm) | 1.6 ± 0.6 (0.5, 3.2) | 1.8 ± 0.6 (1.0, 3.0) | 0.25 |
| Lesion depth (%) | 0.31 | ||
| Central | 53.3 (40/75) | 38.5 (5/13) | |
| Peripheral | 46.7 (35/75) | 61.5 (8/13) | |
| Lesion location (%) | 0.27* | ||
| Left lateral segment | 16.0 (12/75) | 15.4 (2/13) | |
| Segment | 4 9.3 (7/75) | 15.4 (2/13) | |
| Right lobe | 74.7 (56/75) | 69.2 (9/13) | |
| Lesion level (%) | 0.047† | ||
| Upper than hilar | 42.7 (32/75) | 76.9 (10/13) | |
| Hilar level | 18.7 (14/75) | 0 (0/13) | |
| Lower than hilar | 38.7 (29/75) | 23.1 (3/13) | |
| Adjacent landmark (%) | 0.70 | ||
| Present | 36.0 (27/88) | 23.1 (3/13) | |
| Absent | 64.0 (48/88) | 76.9 (10/13) |
Values are mean ± standard deviation (range). *Comparison between right lobe and left lobe, †Comparison between upper than hilar level and hilar or lower than hilar level. p values less than 0.05 indicate statistical significance.