Table 1 Decay characteristics of 131I [34], 177Lu [35], and 188Re [36]
From: Determination of gamma camera calibration factors for quantitation of therapeutic radioisotopes
Isotope | Half-life | Strongest γ emissions E γ [keV] (I γ [%])a | Mean β energy Emean [keV] | Max β energy Emax [keV] |
|---|---|---|---|---|
131I | 8.03Â days | 284 (6.1) | 181.9 | 970.8 |
364 (81.5) | ||||
637 (7.2) | ||||
723 (1.8) | ||||
177Lu | 6.65Â days | 113 (6.2) | 134.2 | 498.3 |
208 (10.4) | ||||
188Re | 17.00Â h | 155 (15.6) | 763 | 2120.4 |
478 (1.1) | ||||
633 (1.4) |