Table 1.

Resolution of Reconstructed microPET Images^a

		Full width at half maximum (mm)		Full width at tenth maximum (mm)
Reconstruction method	Distance from scanner axis (mm)	radial	tangential	radial	tangential
18F
OSEM	0	1.84 ± 0.02b		3.49 ± 0.05c
	8	2.05 ± 0.06c	1.94 ± 0.04c	3.69 ± 0.08d	3.56 ± 0.07d
	16	2.10 ± 0.05c	1.91 ± 0.03c	3.89 ± 0.08d	3.60 ± 0.07d
MAP	0	1.88 ± 0.01b		3.52 ± 0.02c
	8	2.01 ± 0.02c	1.99 ± 0.02c	3.71 ± 0.02d	3.69 ± 0.02d
	16	1.89 ± 0.01c	1.92 ± 0.03c	3.53 ± 0.02d	3.59 ± 0.03d
3DRP	0	2.47 ± 0.02b		4.59 ± 0.04c
	8	2.36 ± 0.03c	2.59 ± 0.03c	4.37 ± 0.03d	4.76 ± 0.04d
	16	2.51 ± 0.02c	2.42 ± 0.02c	4.63 ± 0.03d	4.50 ± 0.03d
124I
OSEM	0	3.00 ± 0.06b		6.07 ± 0.33c
	8	2.45 ± 0.17c	2.33 ± 0.04c	5.22 ± 0.28d	5.30 ± 0.53d
	16	2.97 ± 0.10c	3.01 ± 0.03c	5.92 ± 0.17d	5.54 ± 0.35d
MAP	0	2.62 ± 0.06b		5.16 ± 0.17c
	8	2.37 ± 0.15c	2.25 ± 0.12c	5.08 ± 0.81d	5.40 ± 0.54d
	16	2.35 ± 0.05c	2.67 ± 0.12c	4.92 ± 0.07d	5.50 ± 0.18d
3DRP	0	3.47 ± 0.06b		7.53 ± 0.55c
	8	3.10 ± 0.14c	2.99 ± 0.16c	8.06 ± 0.96d	6.88 ± 0.39d
	16	3.60 ± 0.14c	3.52 ± 0.09c	6.98 ± 0.35d	7.26 ± 0.45d

PET, positron emission tomography; OESEM, ordered subsets expectation maximum; MAP, maximum a posteriori; 3DRP, three-dimensional filtered backprojection.

^aData are mean values and corresponding standard errors.

^bNumber of measurements = 20.

^cNumber of measurements = 10.

^dNumber of measurements = 5.