Table 1.
The spectral parameters calculated by SIMulation of Imaging Nuclear Detector for cold-spheres in hot-background phantom in the simulation of GE-low-energy high-resolution, GE-low-energy general-purpose, and GE-low-energy high-sensitivity collimators
| Parameter | GE-LEHR | GE-LEGP | GE-LEHS |
|---|---|---|---|
| Compton area (×106) | 0.7112 | 1.417 | 3.246 |
| Photo area (×106) | 0.8665 | 1.727 | 3.956 |
| Pileup area (×106) | 0.0085 | 0.0171 | 0.0391 |
| FWHM (keV) | 17.057 | 17.045 | 16.864 |
| Collimator efficiency | 0.140 | 0.206 | 0.304 |
| Sensitivity (cps/MBq) | 36.6 | 72.9 | 167 |
GE: General Electric, LEHR: Low-energy high-resolution, LEGP: Low-energy general-purpose, LEHS: Low-energy high-sensitivity, FWHM: Full width at half maximum