Table 1.

Relative error in organ activities for SPECT with various compensations and planar imaging.

METHOD	Heart	Lung	Liver	Large Sphere	Small Sphere
OSEM-NC	−75.56%	−62.06%	−70.78%	−74.76%	−78.22%
OSEM-A	31.73%	38.49%	42.79%	−1.11%	−11.75%
OSEM-AS	−8.36%	−1.60%	0.04%	−20.30%	−22.42%
OSEM-AGS	−4.58%	3.34%	4.65%	−2.38%	3.85%
OSEM-ADS	−5.22%	2.48%	4.11%	0.74%	9.06%
Planar	−5.16%	18.9%	−2.51%	14.5%	−21.3%