Table 3.

Sensitivity, resolution, and septal penetration values of collimators from Table 2 found through theoretical calculations and MCNP modeling. [L=LumaGem hexagonal-hole, low-energy high-sensitivity collimator and P=prototype cadmium zinc telluride, matched square-hole general purpose collimator.]

	Calculations				MCNP Model		Difference (MCNP−calculated)
Collimator	Rc (mm)	S [×103 (cpm∕μCi)]	Normalized counts×104	% Septal penetration	FWHM (mm)	Counts×104	FWHM (%)	Counts (%)
L	5.72	1.34	3.85	0.025	5.97	3.85	4.3	N∕A
P	3.92	0.640	1.83	0.010	4.00	1.83	1.9	0.4
1	4.84	1.45	4.17	0.013	4.80	4.16	0.8	0.2
2	5.02	1.96	5.62	0.019	4.98	5.58	0.8	0.8
3	5.04	1.54	4.42	0.025	5.00	4.44	0.8	0.6
4	5.04	1.59	4.56	0.025	5.01	4.55	0.5	0.1
5	5.02	1.74	4.98	0.020	4.93	4.98	1.9	0.1
6	5.01	1.97	5.64	0.022	4.96	5.59	1.0	0.9
7	5.04	0.578	1.65	0.028	5.08	1.70	0.9	2.8
8	5.02	0.603	1.73	0.031	5.06	1.77	0.7	2.4
9	5.04	0.411	1.18	0.036	5.00	1.20	0.8	2.1
10	5.04	0.415	1.19	0.025	4.99	1.20	0.9	0.5
11	5.01	0.588	1.68	0.025	4.96	1.69	1.0	0.6
12	5.02	0.644	1.84	0.026	5.01	1.85	0.2	0.1
13	6.23	2.51	7.18	0.011	6.17	7.00	1.1	2.6
14	7.45	3.55	10.2	0.014	7.31	9.85	2.0	3.2
15	7.50	4.43	12.7	0.022	7.24	12.2	3.5	3.6
16	7.54	3.90	11.2	0.021	7.26	10.8	3.8	3.9
17	7.52	4.44	12.7	0.023	7.44	12.2	1.1	4.1
18	7.53	1.24	3.56	0.018	7.42	3.50	1.5	1.9
19	7.53	1.44	4.12	0.024	7.38	4.05	2.0	1.5
20	7.53	1.27	3.65	0.030	7.40	3.59	1.7	1.7
21	7.53	1.33	3.80	0.032	7.37	3.74	2.2	1.6
22	7.53	1.32	3.79	0.025	7.45	3.72	1.1	1.8
23	7.53	1.45	4.16	0.026	7.43	4.18	1.4	2.0
Mean							1.5±1.0	1.5±1.3