Efficacy and safety of transcatheter arterial chemoembolization combined with microwave ablation for hepatic hemangiomas (> 5 cm)

Table 2 Ablation parameters of the observation group, n (%)

Ablation parameters1	Observation group (n = 50)
Number of ablation procedures
1	47 (94.00)
2	3 (6.00)
Number of ablation probes
1	33 (66.00)
2	17 (34.00)
Average ablation sites	5.78 ± 3.00
Ablation power (W)2
40	1 (2.00)
50	34 (68.00)
60	15 (30.00)
Ablation duration (minute), mean ± SD	27.88 ± 14.11
Embolization to ablation interval3
< 1 week	16 (32.00)
1-3 weeks	10 (20.00)
> 3 weeks	24 (48.00)

¹Continuous variables are expressed as mean ± SD if they are normally distributed or expressed as median ± interquartile range if they are non-normally distributed; categorical variables are expressed as frequency (percentage).

²Ablation power (W) represents the average power output of the ablation device during the procedure. The power settings were adjusted according to the lesion volume and tissue properties.

³The embolization to ablation interval refers to the time interval between embolization and ablation procedures, categorized as < 1 week, 1-3 weeks, and > 3 weeks. Categorization was based on postoperative patient responses and clinical observations.