Table 1.

The mean value, standard deviation, and the p value using t test of six proposed features—vessel volume (V_V), vascularity index (V_I), tumor volume (V_T), vascularity index in tumor (V_{I_in}), vascularity index in normal tissue (V_{I_out}), and vascularity index in around region of tumor (V_{I_around_2}) in the benign and malignant tumors (p < 0.001)

Value	Type	Mean ± standard deviation	p value
VV	Benign	14.4099 ± 31.6045	<0.001
	Malignant	193.4439 ± 294.6314
VI	Benign	0.0010 ± 0.0017	<0.001
	Malignant	0.0045 ± 0.0043
VT	Benign	129.2817 ± 119.5978	<0.001
	Malignant	686.6199 ± 822.3662
VI_in	Benign	0.0002 ± 0.0008	<0.001
	Malignant	0.0022 ± 0.0045
VI_out	Benign	0.0004 ± 0.0007	<0.001
	Malignant	0.0018 ± 0.0026
VI_around_2	Benign	0.0003 ± 0.0022	<0.001
	Malignant	0.0054 ± 0.0090