Table 4. Schematics of prediction of breast cancer phenotypes from Kep_mean+ADC_mean+SUV_max.

	Predicted				Leave-one-out cross validation
	HER2 enriched	Luminal A	Luminal B	Luminal HER2	HER2 enriched	Luminal A	Luminal B	Luminal HER2
Results on biopsy Only
Observed
HER2 enriched	5	0	0	2	4	0	0	3
Luminal A	0	2	1	0	0	0	3	0
Luminal B	1	0	6	1	1	2	4	1
Luminal HER2	1	0	1	1	1	0	2	0
	14/21 (67%); P=0.004				8/21 (38%); P=0.22
Results on mastectomy in 16 cases plus biopsy in 5 cases
Observed
HER2 enriched	6	0	0	1	5	0	0	2
Luminal A	1	5	0	0	1	4	1	0
Luminal B	1	2	1	1	1	2	1	1
Luminal HER2	1	0	1	1	1	0	2	0
	13/21 (62%); P=0.001				10/21 (48%); P=0.04

Abbreviations: ADC=apparent diffusion coefficient; HER2=human epidermal growth factor receptor 2.