SPECT Acquisition Windows
| Candidate imaging window | Lower scatter window | Emission window | Upper scatter window | AC | ē | ∑P (%) |
|---|---|---|---|---|---|---|
| X-ray window, 80 keV | 48-64 | 64-96 | 96-112 | 77.4 | 79.2 | 43 |
| ME γ-window, 240 keV | 204-216 | 216-264 | 264-276 | 239 | 239 | 48 |
ē = theoretic average energy of primary emissions within window; ∑P = Total probability of emission within the energy window per 224Ra decay.