TABLE 5

Summary of Counting-Rate Test Results for Mouse and Rat Phantoms

				Mouse phantom				Rat phantom
System	Energy window (keV)	Timing window (ns)	Randoms correction	Peak NECR (kcps)	Activity^* (MBq)	NECR at 3.7 MBq (kcps)	Scatter fraction (%)	Peak NECR (kcps)	Activity^* (MBq)	NECR at 10 MBq (kcps)	Scatter fraction (%)
microPET P4	350–650	6	Calculated	>601^†	>174^†	22.1	5.2	173	254	19.2	16.7
microPET R4	350–650	6	Calculated	618	156	37.2	9.3	164	137	30.5	22.2
microPET Focus 120	350–650	6	Calculated	897	103	66.5	5.6	267	129	50.9	20.3
microPET Focus 220	250–700	6	Calculated	>763^†	>89^†	47.3	7.2	359	162	51.8	19.3
Inveon	350–625	3.4	Calculated	1670	131	129.0	7.8	592	110	137.8	17.2
ClearPET	250–650	12	Calculated	73	18	29.3	31.0
Mosaic HP	385–665	7	Measured	555	92	59.6	5.4	244	87	65.2	12.7
Argus	250–700	7	Calculated	117	50	18.7	21.0	40	41	20.4	34.4
VrPET	100–700	3.8	Calculated	74	22		11.5	31	34		23.3
LabPET 8	250–650	20	Calculated	279	82	23.5	15.6	94	91	19.4	29.5
LabPET 12	250–650	20	Calculated	362	81	38.9	16.0	156	83	40.5	29.3

↵* Activity at which peak NECR occurs.
↵† Peak value not reached because of insufficient activity at start of scan.