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

Table 5 Enhancement response of tumor blood flow in patients

Time period	Complete disappearance of enhanced response (%)	Decrease in blood flow enhancement (%)	No change in blood flow enhancement (%)	χ2	P value
Before treatment	0	0	100
1 month after treatment	12.5	50	37.5	18.227	0.01
3 months after treatment	20.83	45.83	33.33	14.891	0.021
6 months after treatment	28.33	42.5	29.17	12.224	0.028

P < 0.05 indicates a significant difference.