💉 Lu-177 Activity at Injection (from calibration)
Lu-177 activity at injection from calibration (T½ 6.65 d).
Clinical takeaway
Physical decay only.
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When to use
Pre-injection decay check (e.g. PRRT).
How it works
A=A_cal·e^(−λt), T½=6.65 d.
Key points
- Physical decay only.
References
- Chart of nuclides / ICRP — Lu-177 T½ ≈ 6.65 d
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Calibrated activity | 7400 |
|---|---|
| Unit | MBq |
| Interval (days) | 1 d |
| Extra hours | 0 h |
| Extra minutes | 0 min |
→A_inj6667.5158MBq
- %：90.1 %
- other：180.2031 mCi
- Δt：1 d
Frequently asked questions
- What is Lu-177 Activity at Injection (from calibration)?
- Lu-177 activity at injection from calibration (T½ 6.65 d).
- How is Lu-177 Activity at Injection (from calibration) calculated? What is the core formula?
- A=A_cal·e^(−λt), T½=6.65 d.
- When is Lu-177 Activity at Injection (from calibration) used?
- Pre-injection decay check (e.g. PRRT).
- What are the key clinical points for Lu-177 Activity at Injection (from calibration)?
- Physical decay only.
- What are the limits and cautions when using Lu-177 Activity at Injection (from calibration)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Lu-177 Activity at Injection (from calibration) calculated in practice? Can you show a worked example?
- Inputs: Calibrated activity 7400, Unit MBq, Interval (days) 1 d, Extra hours 0 h, Extra minutes 0 min → Result: A_inj 6667.5158 MBq（%: 90.1 %, other: 180.2031 mCi, Δt: 1 d）
💬 Peer discussion
Licensed clinicians only — about this Tool · Lu-177 at injection
Do not share identifiable patient information (PHI). Discuss principles and workflow only — not a substitute for clinical judgement.
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