Table 1.

Median values of lesion volume and lesion-averaged pharmacokinetic parameters, with interquartile ranges given parenthetically.

	N	Volume (cc)	Ktrans (1/min)	kep (1/min)	vp (%)	ve (%)
benign	60	0.00 (0.00-0.22)	0.00 (0.00-0.04)	0.00 (0.00-0.16)	0.0 (0.0-0.4)%	0 (0-21)%
no abnormality visualized	32*	n/a	n/a	n/a	n/a	n/a
visible benign lesions	28	0.40 (0.22-0.57)	0.06 (0.05-0.08)	0.19 (0.16-0.23)	0.5 (0.4-0.8)%	28 (22-39)%
papilloma	5	0.10 (0.08-0.39)	0.05 (0.04-0.06)	0.27 (0.27-0.28)	0.5 (0.4-0.5)%	18 (17-21)%
fibroadenoma	18	0.48 (0.22-0.57)	0.07 (0.05-0.10)	0.16 (0.11-0.21)	0.4 (0.2-0.9)%	28 (24-56)%
other	5	1.43 (0.37-1.89)	0.08 (0.04-0.09)	0.19 (0.18-0.24)	0.9 (0.7-1.4)%	35 (28-41)%
atypical/malignant lesions	33	0.50 (0.19-2.84)	0.09 (0.08-0.12)	0.31 (0.24-0.36)	0.6 (0.4-1.0)%	34 (28-43)%
atypical	5	0.36 (0.09-1.89)	0.05 (0.04-0.06)	0.24 (0.19-0.26)	0.5 (0.4-0.6)%	25 (15-28)%
malignant	28	0.88 (0.33-2.84)	0.11 (0.08-0.13)	0.32 (0.25-0.36)	0.8 (0.4-1.0)%	39 (30-43)%

^*In 32 patients no abnormality could be identified on the k_ep map. All of these showed benign pathology.