Table 3.

Differences of dPET and MR DCE parameters between tumor and normal prostate

Parameter	Peripheral zone				Non-peripheral zone
	N	Mean difference a	95% CI	p value†	N	Mean difference a	95% CI	p value†
dPET
K1	35	0.332	0.266,0.398	<0.001	4	0.071	−0.078.0.219	0.229
DCE: Quantitative
ktrans	37	0.418	0.220,0.617	<0.001	8	0.083	0.014,0.151	0.025
kep	37	0.121	0.070,0.172	<0.001	8	0.613	0.285,0.941	0.003
ve	37	0.026	−0.028,0.080	0.333	8	−0.169	−0.408,0.070	0.139
iAUC	37	2.371	0.154,4.589	0.037	8	2.621	−1.511,6.753	0.177
DCE: Semi-quantitative
in	37	0.357	0.223,0.490	<0.001	8	0.314	0.080,0.549	0.016
out	37	−0.009	−0.037,0.018	0.496	8	−0.030	-0.050,–0.010	0.010
ttp	37	−0.154	-0.271,–0.037	0.011	8	−0.181	−0.398, 0.037	0.090
at	37	0.007	−0.014,0.027	0.513	8	0.087	−0.073, 0.246	0.240
pei	37	0.171	0.114,0.228	<0.001	8	0.086	−0.017, 0.189	0.088
iAUC	37	0.154	0.106,0.202	<0.001	8	0.096	0.017, 0.176	0.024

CI, confidence interval; DCE, dynamic contrast enhancement; dPET, dynamic positron emission tomography.

^aMean difference between tumor and normal sample. †Paired t-test p value.