TABLE III.

Summary of measured Ergo performance characteristics.

	LEHR	LEAP
Native resolution (mm) at 10 cm	7.5 (7.4)	9.3 (10.6)
Sensitivity (cps/MBq)	63.1 (59.7)	112.6 (113.8)
(cpm/μCi)	140.1 (132.5)	249.9 (252.6)
Pixel size (mm2)	3.28 × 3.18 (3.31 × 3.24)
Uniformity	<5% IU, <3% DU
Count rate	verified to be linear up to 5 Mcps
Energy linearity	linear in the range of 50–350 keV

Note: LEHR = low energy high resolution; LEAP = low energy all purpose; IU = integral uniformity, DU = differential uniformity. The numbers in parentheses are the manufacturer specifications.