Convert Gigabecquerels to Curies
Convert Gigabecquerels (GBq) to Curies (Ci) instantly and accurately.
Conversion Formula
Ci = GBq × 0.02702702703
About Gigabecquerels
The gigabecquerel (GBq) equals 10⁹ Bq. Therapeutic radiopharmaceuticals are dosed in GBq: ¹⁷⁷Lu-PSMA prostate cancer therapy uses 7.4 GBq per cycle; ¹³¹I thyroid cancer ablation uses 3.7-7.4 GBq; ²²³Ra-dichloride (Xofigo) bone metastasis therapy ~3-5 GBq per injection. 1 GBq = 10⁹ Bq.
About Curies
The curie (Ci) equals exactly 3.7 × 10¹⁰ Bq = 37 GBq, originally defined as the activity of 1 g of ²²⁶Ra. Still widely used in the US: ⁶⁰Co teletherapy sources are 5000-15000 Ci; ¹³⁷Cs blood irradiators are 1000-40000 Ci; NRC source licences for industrial radiography cite Ci limits. 1 Ci = 3.7 × 10¹⁰ Bq.
Quick Reference Table
| Gigabecquerels (GBq) | Curies (Ci) |
|---|---|
| 1 GBq | 0.027027 Ci |
| 2 GBq | 0.0540541 Ci |
| 5 GBq | 0.135135 Ci |
| 10 GBq | 0.27027 Ci |
| 25 GBq | 0.675676 Ci |
| 50 GBq | 1.35135 Ci |
| 100 GBq | 2.7027 Ci |