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.
The sensitivities and coefficient of determinations (R 2) at the given source‐detector distance (mean ± SD).
| Source‐detector distance (cm) | Sensitivity (cps/MBq) | R 2 |
|---|---|---|
| 3 | 785.05 ± 39.97 | 1.00 ± 0.002 |
| 6 | 486.70 ± 30.84 | 1.00 ± 0.004 |
| 9 | 290.18 ± 21.69 | 0.99 ± 0.003 |
| 12 | 174.19 ± 24.50 | 0.99 ± 0.004 |
| 15 | 99.64 ± 10.83 | 0.99 ± 0.017 |
| 18 | 55.99 ± 5.13 | 0.98 ± 0.018 |
