CT Perfusion in the Characterisation of Renal Lesions: An Added Value to Multiphasic CT

Table 2

Comparison among the CTp parameters: lesions versus normal cortex.

CTp parameters	MLs	NRC	P value	Oncocytomas	NRC	P value
PS	14.21	38.47	<0.001	35.98	37.74	0.6002
MTT	6.73	4.19	0.011	2.57	2.72	0.7532
BV	15.57	17.08	0.29	18.90	15.02	0.7532
BF	302.87	351.72	0.17	477.02	434.21	0.3454

MLs: malignant lesions; NRC: normal renal cortex; PS: permeability surface; MTT: mean transit time; BV: blood volume; BF: blood flow; a value less than 0.05 indicated a statistically significant difference.