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

Table 3

Comparison among the CTp parameters: malignant lesions versus oncocytomas.

CTp parameters	Oncocytomas	All MLs	P value	Oncocytomas	MHLs	P value
PS	35.98	14.21	<0.001	35.98	13.91	0.009
MTT	2.57	6.73	0.0109	2.57	6.08	0.0279
BV	18.90	15.57	0.2111	18.90	17.10	0.4596
BF	477.02	302.87	0.0240	477.02	344.55	0.0868

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