Intracranial Hemorrhage Volume

ABC/2 estimate with a copy-ready report line — plus an optional ICH Score.

ABC/2 volume

On the slice with the largest hemorrhage area, measure A (greatest diameter) and B (perpendicular). C = slices with blood × thickness.

A — greatest diameter

B — perpendicular to A

Slice thickness

C — slices with blood

More accurate — weighted slice count

Slices > 75% of largest

Slices 25–75% of largest

Slices under 25% don't count; this replaces the simple count (Kothari).

Location(s) — optional, for the report

—mL Enter A, B, slice thickness and slices.

ICH Score — optional

30-day mortality (Hemphill 2001). Useful when the clinical data is available — leave blank to skip; the volume is the key radiology finding.

Glasgow Coma Scale (3–15)

Age (years)

Intraventricular hemorrhage (IVH) Infratentorial origin (brainstem / cerebellum)

ICH Score

—

30-day mortality

—

Enter GCS and age; volume ≥30 mL adds a point.

GCS isn't always available to radiology — that's fine. The volume + report below stand on their own.

📋 Report generator

A ready-to-paste impression that fills in as you work.

Enter A, B, slice thickness and slices to generate a report line.

Volume (mL) = A × B × C ÷ 2 · ABC/2 method (Kothari et al., Stroke 1996). ICH Score: Hemphill et al., Stroke 2001.

Estimate only. ABC/2 overestimates volume for irregular, multifocal or lobar hematomas and post-evacuation. Correlate with the images and clinical picture — not a substitute for clinical judgment.