🧠 ABC/2 Intracerebral Hemorrhage Volume
UseMeasure the longest diameter on the largest slice (A), the perpendicular diameter (B), and the vertical exten…
SourceKothari RU, et al. The ABCs of measuring intracerebral hemorrhage volumes. Stroke. 1996.
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
A hematoma >30 mL—especially supratentorial—is associated with poor outcome and high mortality and is a component of the ICH score (original synthesis · not guideline verbatim).
When to use
Measure the longest diameter on the largest slice (A), the perpendicular diameter (B), and the vertical extent (C); the tool returns the ellipsoid volume.
How it works
Volume (mL) = (A × B × C) / 2, with all diameters in centimeters; C = number of slices with hemorrhage × slice thickness.
Key points
- A hematoma >30 mL—especially supratentorial—is associated with poor outcome and high mortality and is a component of the ICH score (original synthesis · not guideline verbatim).
- ABC/2 assumes a near-ellipsoid shape and overestimates irregular or lobulated clots; use volumetric software when accuracy matters.
- Serial scans tracking volume growth (>33% or >6 mL) identify early deterioration.
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.
| A: longest diameter on the largest slice | 4 cm |
|---|---|
| B: largest diameter perpendicular to A | 3 cm |
| C: vertical extent (slices × slice thickness) | 2.5 cm |
→Estimated hematoma volume15mL
- Formula：(A×B×C)/2
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using ABC/2 Intracerebral Hemorrhage Volume?
- 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 ABC/2 Intracerebral Hemorrhage Volume 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 ABC/2 Intracerebral Hemorrhage Volume calculated in practice? Can you show a worked example?
- Inputs: A: longest diameter on the largest slice 4 cm, B: largest diameter perpendicular to A 3 cm, C: vertical extent (slices × slice thickness) 2.5 cm → Result: Estimated hematoma volume 15 mL（Formula: (A×B×C)/2）