Elements · ← Dy Dysprosium · Er Erbium →
Radioactive holmium-166 microspheres treat liver tumours and can also be seen on scans.
| Symbol | Ho |
|---|---|
| Atomic number | 67 |
| Standard atomic weight | 164.93033 |
| Group | none (lanthanide series) |
| Period | 6 |
| Block | f-block |
| Category | Lanthanide |
| Standard state | Solid |
| Discovered | 1878 |
Source: PubChem, Holmium (periodic table data, retrieved 2026-10-19). Group and period follow the standard 18-column periodic table.
Reinders and colleagues reviewed holmium-166 microspheres, a third type of microsphere for radioembolization of liver tumours in Europe; early studies showed a mean whole-liver dose of 60 Gy was safe and induced tumour response.
As reported in: Reinders, Smits, van Roekel et al. (2019). Holmium-166 Microsphere Radioembolization of Hepatic Malignancies. Seminars in Nuclear Medicine. doi:10.1053/j.semnuclmed.2019.01.008
Abstract only
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