Table 3.

Relative error (in %) in organ activity estimates for the 3 collimators and various reconstruction methods.

Organ/ROI	LEHR Collimator		MEGP Collimator				HEGP Collimator
	OSEM ADS	OSEM AGS	OSEM ADS	OSEM ADS PVC	OSMAP ADS	OSEM AGS	OSEM ADS	OSEM ADS PVC	OSMAP ADS	OSEM AGS
Blood	−60.2±1.1	1704	−41.9±51	−9.67±84	−24.63	−14.43	−44.6±52	−4.20±96	−25.17	−35.43
Marrow	−37.5±1.4	3343	−19.6±50	−1.08±61	−8.48	32.60	−20.7±47	1.54±60	−8.09	−0.63
Heart	−12.1±98	2545	−8.66±37	−0.53±41	−0.97	48.05	−9.24±28	0.02±31	−0.64	18.24
Kidney	−19.9±2.7	4384	−10.9±85	2.1±99	−2.71	55.19	−11.4±90	4.0±1.1	−2.11	15.67
Liver	−7.5±55	2927	−5.60±22	−0.22±24	0.09	56.46	−5.98±25	0.23±27	0.34	24.03
Lung	6.6±1.2	5100	1.46±37	6.60±42	−0.15	88.03	1.98±36	7.45±42	0.30	39.41
Spleen	−25.6±2.4	2378	−12.9±64	−0.56±73	−7.30	31.74	−13.4±64	0.83±66	−7.69	7.25