Scanner | Acquisition mode | Mean FWHM (mm) | SD of FWHM (mm) | Reconstruction parameter |
---|---|---|---|---|
Discovery RX | 2D | 7.89 (n = 35) | 0.12 | OSEM; 2 iterations, 21 subsets; 5-mm gaussian filter |
Discovery RX | 3D | 8.10 (n = 28) | 0.09 | 3D OSEM; 2 iterations, 21 subsets; 5-mm gaussian filter |
Discovery LS | 2D | 8.54 (n = 30) | 0.16 | OSEM; 2 iterations, 21 subsets; 5-mm gaussian filter |
Discovery LS | 3D | 5.75 (n = 29) | 0.58 | 3DRP; transaxial ramp, 4 mm |
HRRT | 3D | 4.48 (n = 19) | 0.24 | 3D OSEM; 6 iterations, 16 subsets; 2-mm gaussian filter |
OSEM denotes reconstruction algorithm discussed in the study by Hudson and Larkin (8), and 3DRP denotes analytic reprojection reconstruction algorithm discussed in the study by Kinahan and Rogers (9).