TABLE II.
Field of View (FOV) and No. of Pinholes (Nx, Nz) for Different Focus Distances for Flat Detector. To Calculate the no. of Pinholes, it is Assumed That the Pinholes are all Placed on a Sphere Of Radius 200 mm (i.e., all Pinholes Point to a Co-Center 200 mm Below Their Axis). the SIR is the Sensitivity Improvement for a Curved Detector After opening d0 Such That Resolution is Same as Flat at 15 cm
| a (mm) | 60.0 | 70.0 | 70.0 | 80.0 | 80.0 | 90.0 | 90.0 | 100.0 | 100.0 | 110.0 | 110.0 | 120.0 | 120.0 |
| W1 (mm) | 80.0 | 90.0 | 100.0 | 90.0 | 110.0 | 100.0 | 120.0 | 100.0 | 140.0 | 100.0 | 150.0 | 110.0 | 166.0 |
| W2 (mm) | 60.8 | 68.4 | 76.0 | 68.4 | 83.6 | 76.0 | 91.2 | 76.0 | 106.4 | 76.0 | 114.0 | 83.60 | 126.16 |
| Nz | 9 | 8 | 8 | 9 | 7 | 8 | 7 | 8 | 7 | 9 | 6 | 8 | 6 |
| Nx | 3 | 3 | 2 | 3 | 2 | 3 | 2 | 3 | 2 | 3 | 2 | 3 | 2 |
| FOV15cm | 200.0 | 192.84 | 214.29 | 168.75 | 206.25 | 166.67 | 200.00 | 150.0 | 210.0 | 136.36 | 204.55 | 137.5 | 207.50 |
| α1 (deg) | 67.38 | 65.47 | 71.07 | 58.72 | 69.02 | 58.11 | 67.38 | 53.13 | 69.98 | 48.89 | 68.57 | 49.25 | 69.34 |
| α2 (deg) | 53.74 | 52.08 | 56.99 | 46.29 | 55.17 | 45.78 | 53.74 | 41.61 | 56.03 | 38.11 | 54.78 | 38.41 | 55.46 |
| d0 (mm) | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 | 3.86 |
| deff 1 (mm) | 4.08 | 4.07 | 4.10 | 4.05 | 4.09 | 4.04 | 4.08 | 4.03 | 4.09 | 4.01 | 4.09 | 4.01 | 4.09 |
| deff 2 (mm) | 4.03 | 4.02 | 4.04 | 4.00 | 4.03 | 4.00 | 4.03 | 3.99 | 4.04 | 3.98 | 4.03 | 3.98 | 4.03 |
| SIR | 2.25 | 2.03 | 2.03 | 1.85 | 1.86 | 1.73 | 1.73 | 1.63 | 1.63 | 1.55 | 1.55 | 1.48 | 1.49 |