Table 1.
Some potential radio-lanthanides proposed in nuclear medicine.
| Radio-lanthanides (half-life)* | Decay modes (branching ratio)* | Gamma-energy, keV (Iγ, %)* | βend point energy, keV (Iγ, %)* | Application |
|---|---|---|---|---|
| 134La (6.5 min) | β+ (63%); EC (37%) | 605 (5.0), 511.0 (127.2) | 2,709 (62.0) | Imaging |
| 140La (1.7 d) | β− (100%) | 328.8 (20.3), 487.0 (45.5), 815.8 (23.3), 1596.2 (95.4) | 1,239 (11.0), 1,348 (43.9), 1,677 (20.2) | Therapy |
| 141Ce (32.5 d) | β− (100%) | 145.44 (48.2) | 435 (69.7), 580 (30.3) | Tracer studies |
| 140Pr (3.4 min) | β+ (51%); EC (49%) | 511.0 (102.0) | 2,366 (51.0) | Imaging |
| 143Pr (13.6 d) | β− (100%) | No good gamma-energy | 934 (100) | Therapy |
| 144Pr (17.3 min) | β− (100%) | No good gamma-energy | 2,997 (97.9) | Therapy |
| 149Pm (53.1 h) | β− (100%) | 285.9 (3.1) | 1,071 (95.9) | Therapy |
| 157Dy (8.1 h) | EC (100%) | 326.2 (92) | - | Imaging |
| 165Dy (2.3 h) | β− (100%) | 94.7 (3.6) | 1,192 (15), 1,287 (83.0) | Therapy |
| 166Dy (81.6 h) | β− (100%) | 82.5 (14) | 404 (97.0) | Therapy |
| 166Ho (26.8 h) | β− (100%) | 80.6 (6.7) | 1,774 (49.9), 1,855 (48.8) | Therapy |
| 167Tm (9.2 d) | EC (100%) | 207.8 (42) | - | Imaging |
| 170Tm (128.6 d) | β− (99.86%), EC (0.13%) | 84.2 (2.5) | 968 (81.9) | Therapy |
| 172Tm (63.6 h) | β− (100%) | 1093.6 (6.0), 1387.1 (5.6), 1529.7 (5.1) | 414 (10.1), 1,801 (36), 1,880 (29) | Therapy |
| 169Yb (32.0 d) | EC (100%) | 109.8 (17.5), 130.5 (11.3), 177.2 (22.2), 197.9 (35.8), 307.7 (10.0) | - | Therapy |
| 177Lu (6.7 d) | β− (100%) | 112.9 (6.4), 208.36 (11) | 175 (11.7), 384 (8.9), 497 (79.4) | Therapy |