Extrapulmonary metastases impact survival outcomes of thermal ablation for colorectal lung oligometastases: A multicenter study

Table 3 Comparison of therapeutic parameters between microwave ablation and radiofrequency ablation, mean ± SD

Parameters	RFA (n = 143)	MWA (n = 193)	P value
Procedure duration (minute), median (IQR)	15.0 (11.0)	7.0 (8.0)	< 0.001
Power output (W), median (IQR)	180 (110)	40 (10)	< 0.001
Temperature (°C)	96.0 ± 8.9	98.9 ± 8.3	0.071
Number of ablation times, median (IQR)	2.0 (2.0)	2.0 (1.5)	0.079
Puncture depth (cm)	7.2 ± 2.2	7.3 ± 2.0	0.784

IQR: Interquartile range; RFA: Radiofrequency ablation; MWA: Microwave ablation. Procedure duration, power output, and ablation temperature reflect key technical distinctions between the two modalities. Microwave ablation typically achieves higher tissue temperatures in shorter timeframes using lower energy settings compared to radiofrequency ablation. Number of ablation times and puncture depth were comparable, suggesting similar procedural complexity across groups.