Contrast-enhanced ultrasound in evaluating the curative effect of interventional therapy in patients with liver cancer

Table 3 Summary of tumor microvessel densities in patients

Time period	High microvascular density (%)	Low microvascular density (%)	Medium microvascular density (%)	Total (%)	F value	P value
Before treatment	72.50 ± 4.23	14.25 ± 3.65	13.25 ± 3.45	72.50 ± 4.23
1 month after treatment	60.00 ± 5.12	22.50 ± 4.43	17.50 ± 4.25	60.00 ± 5.12	5.784	0.019
3 months after treatment	50.25 ± 5.89	28.00 ± 4.95	21.75 ± 5.12	50.25 ± 5.89	7.450	0.008
6 months after treatment	40.00 ± 4.50	35.00 ± 5.45	25.00 ± 4.92	40.00 ± 4.50	9.236	0.003

P < 0.05 indicates a significant difference.