🦴 Bone Scan Timing + Decayed Activity
UseScheduling and activity check.
Loading calculator…
SourceSNMMI bone scintigraphy procedure standard
Runs locally in your browser (no PHI uploaded). For licensed clinicians — not a substitute for clinical judgement.
Stored on this device for revisit reminders
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Scene next step
📋nm nuclearOpen scene pack →Related scores
Score + version; reference only — not a substitute for care · no HIS write
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Methodology · worked example, guidelines & full notes
Clinical takeaway
A=A0·e^(−λt).
When to use
Scheduling and activity check.
How it works
Typical delay 2–4 h; Tc-99m T½ 6.01 h.
Key points
- A=A0·e^(−λt).
References
- SNMMI bone scintigraphy procedure standard
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.
| Delay | 3 h |
|---|---|
| Injected activity | 20 |
| unit | mCi |
→A at imaging14.1503mCi
- % remaining：70.75 %
- delay band：Typical 2–4 h
- other：523.5608 MBq
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Bone Scan Timing + Decayed Activity?
- 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.
- Does Bone Scan Timing + Decayed Activity upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Bone Scan Timing + Decayed Activity calculated in practice? Can you show a worked example?
- Inputs: Delay 3 h, Injected activity 20, unit mCi → Result: A at imaging 14.1503 mCi（% remaining: 70.75 %, delay band: Typical 2–4 h, other: 523.5608 MBq）