Table 1.

Activity recovery coefficient as a function of syringe diameter and post-reconstruction Gaussian filters. Recovery is calculated as the ratio between the mean of a central 6 mm diameter VOI and the reference solution.

Diameter of Syringe/FWHM	0 mm	2 mm	4 mm	6 mm
26.5 mm	1.00	1.01	1.01	1.02
19.1 mm	1.01	1.01	1.00	0.97
14.6 mm	0.91	0.90	0.86	0.78
12.0 mm	0.83	0.80	0.73	0.63
8.7 mm	0.63	0.60	0.50	0.41