Metabolic Volumetric Parameters in ¹¹C-Choline PET/MR Are Superior PET Imaging Biomarkers for Primary High-Risk Prostate Cancer

Table 3

Univariate and multivariate Cox regression for progression-free survival (PFS).

	Univariate analysis				Multivariate analysis
		95% CI				95% CI
	HR	Lower	Upper	value	HR	Lower	Upper	value
MTV	1.02	1.00	1.03	0.014	—	—	—	NS
UVP^†	1.002	1.000013	1.0004	0.049	—	—	—	NS
Kepmax^†	1.00046	1.000013	1.0009	0.044	—	—	—	NS
Kepkur	1.02	1.00	1.03	0.019	—	—	—	NS
1/ADCmin	12.52	0.87	180.41	0.063	—	—	—	NS
UVP/ADCmin	1.01	1.00	1.02	0.007	1.01	1.00	1.02	0.031
MTV/ADCmin	1.09	1.03	1.14	0.001	—	—	—	NS
Kepmax/ADCmin^†	1.0035	1.001	1.006	0.002	—	—	—	NS
Kepkur/ADCmin	1.09	1.03	1.15	0.002	1.09	1.02	1.16	0.009

^†Data are expressed as exact numbers; value <0.05; NS, not significant.