Table 2. Radiofrequency lesion depth and circumferential extension in renal and common hepatic arteries.

			Lesion depth		Circumferential extension
		N	Mean, mm	Max, mm	Mean, %	Max, %
Renal	7 days	20	5.8±1.4	10.6±3.0	33.0±7.2	59.0±18.7
	28 days	20	4.1±1.4*	7.7±3.0*	35.3±11.3	67.3±19.7
Hepatic	7 days	10	4.7±0.7	7.1±1.3	37.0±15.6	59.5±22.9
	28 days	10	4.4±0.6	6.9±1.1	43.2±7.3	73.0±7.5
Data are mean±standard deviation. *p<0.01 vs 7 days