Characteristics of Radionuclides for RS of Knee
| Characteristic | 166Ho | 165Dy | 90Y |
|---|---|---|---|
| Half-life (h) | 26.9 | 2.3 | 64.1 |
| Maximum β-energy (MeV) | 1.8 | 1.3 | 2.3 |
| γ-Energy (keV) | 48–58 (9.8%) | 95 (4.0%) | None |
| 81 (6.2%) | 361 (0.8%) | ||
| 1,379 (0.9%) | |||
| Particle size (μm) | 1.2–12 | 0.8–12 | 1.5–3.5 |
| Soft-tissue penetration (mm) | |||
| Maximum range | 8.7 | 5.6 | 10.8 |
| Mean range | 2.2 | 1.4 | 3.8 |