Table 1.
Estimated activities for TheraSphere vials dispensed Monday and calibrated the Sunday prior
| Available activities (GBq) | Microspheres (millions) | Activity at time of administration (GBq) |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Monday | Tuesday | Wednesday | Thursday | Friday | Monday | Tuesday | Wednesday | Thursday | ||
| 3 | 1.2 | 2.7 | 2.1 | 1.6 | 1.2 | 0.95 | 0.43 | 0.3 | 0.2 | 0.17 |
| 5 | 2 | 4.5 | 3.5 | 2.7 | 2.1 | 1.6 | 0.7 | 0.5 | 0.4 | 0.29 |
| 7 | 2.8 | 6.3 | 4.8 | 3.7 | 2.9 | 2.2 | 1 | 0.7 | 0.5 | 0.40 |
| 10 | 4 | 9.0 | 6.9 | 5.3 | 4.1 | 3.2 | 1.5 | 1.0 | 0.76 | 0.57 |
| 15 | 6 | 13.5 | 10.4 | 8.0 | 6.2 | 4.8 | 2.2 | 1.5 | 1.1 | 0.86 |
| 20 | 8 | 18 | 13.8 | 10.7 | 8.2 | 6.3 | 2.9 | 2.0 | 1.5 | 1.15 |
A 1 GBq administration may represent between 1.2 million and 7 million microspheres depending on date of delivery. A Thursday administration would require a 3 GBq vial, or an extended shelf-life administration on the following Thursday would require 17.5 GBq.