Table 2.

Results for calculated contrast of Jaszczak phantom spheres from reconstructed SPECT acquisitions

Condition	Spheres size (mm)
	31.8	25.4	19.1	15.9	12.7	9.5
Cold experiment	0.774	0.627	0.575	0.372	0.191	0.132
Cold simulated	0.661±0.003	0.527±0.007	0.487±0.007	0.400	0.23±0.003	0.2±0.004
Hot simulated	0.92±0.002	0.91±0.002	0.88±0.008	0.81±0.009	0.76±0.001	0.56±0.001