TABLE 3.
Ablation Procedure Characteristics (N=39 procedures in 30 subjects)
| Final catheter position before ablation | |
| Distal end adjacent to the nodule | 20/30 (66.7) |
| Nodule max. diameter ≥20 mm | 2/30 (6.7) |
| Nodule max. diameter <20 mm | 18/30 (63.3) |
| Distal end within the nodule | 10/30 (33.3) |
| Nodule max. diameter ≥20 mm | 3/30 (10) |
| Nodule max. diameter <20 mm | 7/30 (23.3) |
| Subjects with 1 ablation | 22/30 (73.3) |
| Subjects with 2 ablations | 7/30 (23.3) |
| Subjects with 3 ablations | 1/30 (3.3) |
| Total number of CBCT spins per subject | 10 (6, 14) 11.1±5.4 (5–29) |
| Total radiation dose, Cumulative Air Kerma (mGy)* | 407.6 (207, 1036) 697.8±724.3 (68.4–3358) |
| Average ablation time per ablation (min) | 10 (7, 10) 8.1±2.3 (3.5–10) |
| Procedure time (min) | |
| Entire case (bronchoscope in/out) | 123 (89, 155) 126.8±45.4 (54–247) |
| Navigation time, including positioning (locatable guide in/ablation catheter in) | 52 (41, 88) 62.2±30.3 (15–127) |
| Ablation procedure only (ablation catheter in/out) | 39 (34, 58) 54.8±34.6 (22–159) |
| Approximate average ablative margin (mm) | 10 (8, 12) 9.9±2.7 (5–15) |
| Nodules with any edge lacking 5 mm margin | 3/30 (10.0) |
| Technical success† | 30/30 (100.0) |
Data are presented as n/N (%), mean±SD (mix-max), or median (Q1, Q3).
*
Radiation dose was not available in mGy units for 1 subject and was excluded.
†
Nodule treatment according to the study protocol.15
CBCT indicates cone-beam computed tomography.