📐 Fetal Measurement Reference (US/MRI)
UseAfter measuring lateral-ventricle atrial width on ultrasound or MRI in the second or third trimester, check w…
StrataBands per SMFM 2018 (PMID 29705191): an atrial width ≥10 mm is ventriculomegaly — 10–12 mm mild, 13–15 mm mod…
LimitsThis page provides only the lateral-ventricle atrial bands — no refer… · Measurement plane, quality control and fetal position affect the resu… · The result alone is not a diagnosis.
SourceSMFM. Mild fetal ventriculomegaly: diagnosis, evaluation, and management. Am J Obstet Gynecol 2018;…
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
SMFM 2018: atrial width ≥10 mm is ventriculomegaly.
When to use
After measuring lateral-ventricle atrial width on ultrasound or MRI in the second or third trimester, check which band it falls in.
How it works
Band by measured width: <10 mm; 10–12 mm; 13–15 mm; >15 mm (SMFM 2018).
Key points
- SMFM 2018: atrial width ≥10 mm is ventriculomegaly.
- 10–12 mm mild, 13–15 mm moderate, >15 mm severe.
- Use GA-specific growth charts for other biometry.
References
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.
| Gestational age | 28 wk |
|---|---|
| GA days (optional 0–6) | 3 d |
| Lateral-ventricle atrial width Vp | 8 mm |
→Lateral-ventricle atrium VpNormal range (<10 mm)
- Band (SMFM 2018)：<10 mm normal range; ≥10 mm ventriculomegaly: 10–12 mild, 13–15 moderate, >15 mm severe
Verification & sources · governance
FAQ
Frequently asked questions
- Does Fetal Measurement Reference (US/MRI) 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 Fetal Measurement Reference (US/MRI) calculated in practice? Can you show a worked example?
- Inputs: Gestational age 28 wk, GA days (optional 0–6) 3 d, Lateral-ventricle atrial width Vp 8 mm → Result: Lateral-ventricle atrium Vp Normal range (<10 mm)（Band (SMFM 2018): <10 mm normal range; ≥10 mm ventriculomegaly: 10–12 mild, 13–15 moderate, >15 mm severe）