Table 2.

Calculated results for SdNR, FHWM of the ASF, and MTF. Data are separated into the five groups of configurations that were outlined in Sec. 2B. The configuration with 29 projection views, a 28° angular span, and an even dose distribution resulted in the highest “quality factor” value for an exposure of 100 mAs. MMOC stands for more mAs on central projections. LMOC stands for less mAs on central projections.

Group	Number of projections	Total angular span	Entrance dose (mR)	Detector resolution (μm)	mAs distribution	SdNR	FWHM of ASF	MTF at 10%	QF
1	15	14°	727	140	Uniform	5.72 ± 0.21	7.80	4.14 ± 0.01	0.85
1	15	28°	682	140	Uniform	5.44 ± 0.20	4.08	4.20 ± 0.03	1.00
2	15	28°	682	140	Uniform	5.44 ± 0.20	4.08	4.20 ± 0.03	1.00
2	29	28°	656	140	Uniform	5.81 ± 0.16	4.10	4.25 ± 0.02	1.02
3	29	28°	656	140	Uniform	5.81 ± 0.16	4.10	4.25 ± 0.02	1.02
3	29	28°	665	140	LMOC	4.97 ± 0.20	4.03	4.23±0.01	0.98
3	29	28°	675	140	MMOC	5.04 ± 0.16	4.05	4.25 ± 0.01	0.98
4	29	28°	385	140	Uniform	4.32 ± 0.14	4.14	4.30 ± 0.01	0.93
4	29	28°	523	140	Uniform	4.87 ± 0.12	3.93	4.28 ± 0.02	0.98
4	29	28°	656	140	Uniform	5.81 ± 0.16	4.10	4.25 ± 0.02	1.02
4	29	28°	791	140	Uniform	6.06 ± 0.24	4.04	4.23 ± 0.02	1.04
5	15	28°	682	70	Uniform	2.97 ± 0.08	4.30	5.15 ± 0.05	0.91
5	15	28°	682	140	Uniform	5.44 ± 0.20	4.08	4.20 ± 0.03	1.00