| Conventional 2D transducer | 3D mechanically swept transducer | Real-time 3D transducer |
---|---|---|---|
Estimated nodule volume difference | Calliper measurement 2.2 mL (1.3–3.5 mL) | Volume tool 2.0 mL (1.3–2.9 mL) | Calliper measurement 0.4 mL (-0.4–1.1 mL) Volume tool 0.7 mL (-0.0–1.6 mL) |
Nodule ablation coverage | 80.8% (67.1–92.4%) | 60.1% (58.2–71.6%) | 76.7% (65.7–85.0%) |
Volume ablated outside nodule | 4.2 mL (1.2–5.9 mL) | 0.5 mL (0.4–1.0 mL) | 5.1 mL (4.3–6.8 mL) |
Ablation time/mL | 105.5 s/mL (69.5–94.5 s/mL) | 72.5 s/mL (66.8–77.3 s/mL) | 80.0 s/mL (69.5–94.5 s/mL) |