Value of magnetic resonance diffusion combined with perfusion imaging techniques for diagnosing potentially malignant breast lesions

Table 2 Characteristics of the lesions

Parameters		Benign (n = 46)	Malignant (n = 49)	P value
Lesion size (cm)		1.5 (0.6-2.7)	2.4 (1.6-5.7)	0.007
Perfusion imaging parameters	Ktrans	0.076 ± 0.001	0.681 ± 0.013	< 0.001
	Kep	0.140 ± 0.004	1.892 ± 0.021	< 0.001
	Ve	0.577 ± 0.012	0.316 ± 0.010	0.866

K^trans: Volume transfer constant; K_ep: Rate constant; V_e: Extravascular extracellular volume fraction.