Evaluation of Multimode Color Doppler Flow Imaging in the Diagnosis of Solid Renal Tumor

Table 1

Blood flow grade in 66 benign and malignant renal lesions by CDFI, PDFI, SMI, and CEUS.

Examination method	The grade of Adler (n)				X^2
	Grade 0	Grade 1	Grade 2	Grade 3
CDFI					6.057	0.109
Benign	4	4	1	0
Malignant	8	25	17	7
PDFI					3.634	0.304
Benign	3	3	3	0
Malignant	7	23	19	8
SMI					11.575	0.009
Benign	2	4	3	0
Malignant	2	8	32	15
CEUS					11.162	0.011
Benign	2	3	4	0
Malignant	1	10	27	19

was calculated by Pearson’s χ² test.  < 0.05 was considered as statistical significance.