Spatial Resolution Measured with Point Source
| Direction | Width | z = 0 cm | z = 6.4 cm | ||
|---|---|---|---|---|---|
| r = 0 cm | r = 10 cm | r = 0 cm | r = 10 cm | ||
| Transaxial | FWHM | 4.6 | 5.4 | 4.4 | 5.7 |
| EW | 5.5 | 6.3 | 5.2 | 6.7 | |
| Axial | FWHM | 5.7 | 7.7 | 5.7 | 7.4 |
| EW | 6.4 | 8.3 | 6.1 | 7.9 | |
Data are in millimeters. Profile was drawn through maximum pixel value in image, and FWHM was determined by linear interpolation. Values were averaged over radial and tangential directions. Sinogram sampling and image pixel size were 0.5 and 1.0 mm, respectively, per bin in transverse direction and 2.0 and 2.0 mm, respectively, in axial direction for r = 0 and 10 cm, respectively.