Research Article
Comparison of Imaging Characteristics of 124I PET for Determination of Optimal Energy Window on the Siemens Inveon PET
Table 1
Characteristics of 124I in comparison with 18F.
| | 124I | 18F |
| Half-life | 4.18 day | 109.74 min |
| Max. positron energy (keV) | 2,138 | 635 |
| Branching ratio (%) | 23 | 97 |
| Gamma energy (keV) | 511 (23%) 602 (60%) 722 (10%) 1,691 (11%) | 511 (97%) |
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