Table 1.

Summary of scan protocols for training and testing sets. Samples scanned for this study included in vivo mice, ex vivo mice, and phantoms containing vials of known material concentration.

PCD Thresholds (keV)	Training Sets	Validation Sets	Test Sets	Contrast Materials	kVp	mA	Dose (mGy)	Types of Samples Scanned
25, 34, 50, 60	3	0	1	I, Gd	80	4	36	in vivo, ex vivo
25, 34, 50, 80	2	1	1	I, Au	125	2.5	38	ex vivo
25, 28, 34, 40	2	0	1	I	80	4	36	ex vivo, phantom
50, 65, 80, 90	2	0	1	Gd, Ta, Bi	125	2.5	38	ex vivo, phantom
28, 34, 39, 45	0	0	1	I, Ba	80	4	36	in vivo