[Retracted] The Correlation between Targeted Contrast-Enhanced Ultrasound Imaging and Tumor Neovascularization of Ovarian Cancer Xenografts in Nude Mice

Table 4

Correlation between targeted contrast ultrasound parameters and neovascular density ( ± s, s).

Group		1 week	2 weeks	3 weeks	4 weeks	5 weeks	6 weeks	7 weeks
PI	r	0.455	0.645	0.668	0.693	0.611	0.484	0.268
		＜0.05	＜0.05	＜0.05	＜0.05	＜0.05	＜0.05	＜0.05
TTP	R	−0.414	−0.669	−0.692	−0.704	−0.576	−0.348	−0.284
		＜0.05	＜0.05	＜0.05	＜0.05	＜0.05	＜0.05	＜0.05

Note: PI: peak intensity; TTP: time to peak.