Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Photon energy, location of Gaussian fit, and calculated energy resolution
| Isotope | Photon energy (keV) | Gaussian fit center (keV) | FWHM/E0 ± SD |
|---|---|---|---|
| 99mTc | 141 | 142 ± 1.3 | 67% ± 1.3% |
| 133Ba | 344 | 340 ± 1.9 | 67% ± 2.6% |
| 18F | 511 | 515 ± 4.4 | 42% ± 3.2% |
| 137Cs | 662 | 666 ± 5.6 | 32% ± 4.2% |
Note that the photon energy used for 133Ba is a weighted average of the three photon emissions near the most abundant (356 keV).
