🧒 Pediatric NM Administered Activity Estimate
Estimate paediatric administered activity from SNMMI/EANM North American consensus-style MBq/kg tables with min/max clamps, or adult reference × weight/70.
North American consensus MBq/kg ballpark.
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When to use
Bedside ballpark for bone, DMSA, MAG3/DTPA, thyroid Tc, MIBG, FDG. Institutional protocols prevail.
How it works
A = (MBq/kg)×weight with published clamps; or A_adult×(W/70) then clamp.
Key points
- North American consensus MBq/kg ballpark.
- Compare EANM Paediatric Dosage Card.
- Estimate only — not a prescription.
References
- SNMMI–EANM North American Consensus Guidelines for Pediatric Radiopharmaceutical Administered Doses (updates)
- EANM Paediatric Dosage Card
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.
| Exam type | Bone scan (Tc-99m MDP/HDP) |
|---|---|
| Weight | 20 kg |
→Suggested activity186MBq
- mCi：5.027
- Model：9.3 MBq/kg
- Before clamp：186 MBq
| Exam type | FDG PET |
|---|---|
| Weight | 20 kg |
→Suggested activity74MBq
- mCi：2
- Model：3.7 MBq/kg
- Before clamp：74 MBq
Frequently asked questions
- What is Pediatric NM Administered Activity Estimate?
- Estimate paediatric administered activity from SNMMI/EANM North American consensus-style MBq/kg tables with min/max clamps, or adult reference × weight/70.
- How is Pediatric NM Administered Activity Estimate calculated? What is the core formula?
- A = (MBq/kg)×weight with published clamps; or A_adult×(W/70) then clamp.
- When is Pediatric NM Administered Activity Estimate used?
- Bedside ballpark for bone, DMSA, MAG3/DTPA, thyroid Tc, MIBG, FDG. Institutional protocols prevail.
- What are the key clinical points for Pediatric NM Administered Activity Estimate?
- North American consensus MBq/kg ballpark. Compare EANM Paediatric Dosage Card. Estimate only — not a prescription.
- What are the limits and cautions when using Pediatric NM Administered Activity Estimate?
- 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 Pediatric NM Administered Activity Estimate calculated in practice? Can you show a worked example?
- Inputs: Exam type Bone scan (Tc-99m MDP/HDP), Weight 20 kg → Result: Suggested activity 186 MBq（mCi: 5.027, Model: 9.3 MBq/kg, Before clamp: 186 MBq） Inputs: Exam type FDG PET, Weight 20 kg → Result: Suggested activity 74 MBq（mCi: 2, Model: 3.7 MBq/kg, Before clamp: 74 MBq）
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