ICH Volume Calculator
Calculate intracerebral hemorrhage volume using the ABC/2 method from CT scan measurements
Calculate ICH Volume
Maximum hemorrhage diameter on CT scan slice
Width perpendicular to length on same CT slice
Thickness of each CT scan slice
Shape affects the division factor in ABC/2 formula
Total number of CT slices showing hemorrhage
ICH Volume Results
Enter measurements to calculate ICH volume
Formula used: ICH Volume = A × B × C × slices ÷ 2
Calculation: 0.0 × 0.0 × 0.5 × 0.0 ÷ 2 = 0.0 mL
Method: ABC/2 formula based on CT scan measurements
Medical Disclaimer
This calculator is for educational and informational purposes only. It should never replace professional medical assessment or clinical judgment. ICH volume calculations require proper CT scan interpretation by qualified medical professionals. Always consult healthcare providers for accurate diagnosis and treatment decisions.
Example Calculation
Clinical Case Example
Patient: 65-year-old with suspected stroke
CT findings: Parenchymal hemorrhage in basal ganglia
Length (A): 5.0 cm
Width (B): 3.0 cm (perpendicular to A)
Slice thickness: 2.0 mm
Number of slices: 40 slices
Shape: Ellipsoid
ABC/2 Calculation
ICH Volume = A × B × C × slices ÷ shape factor
ICH Volume = 5.0 × 3.0 × 0.2 × 40 ÷ 2
ICH Volume = 120 ÷ 2
ICH Volume = 60.0 mL
⚠️ Large volume (>50 mL) - poor prognostic marker
ABC/2 Method Components
Maximum Length
Longest diameter of hemorrhage
Measured on largest CT slice
Perpendicular Width
Width perpendicular to A
On the same CT slice as A
Slice Count × Thickness
Number of slices with bleeding
Multiplied by slice thickness
Prognostic Significance
Generally better outcomes, lower mortality
Moderate volume, intermediate prognosis
Poor prognostic marker, immediate intervention needed
Measurement Tips
Measure on largest hemorrhage cross-section
Width B must be perpendicular to length A
Count slices with ≥75% area as full slices
Slices with 25-75% area count as 0.5
Ellipsoid shape uses factor of 2, irregular uses 3
Understanding ICH Volume Calculation
What is Intracerebral Hemorrhage (ICH)?
Intracerebral hemorrhage (ICH) is bleeding within the brain parenchyma, often caused by hypertension, trauma, vascular malformations, or anticoagulation therapy. Accurate volume measurement is crucial for prognosis and treatment decisions.
Clinical Importance
- •Predicts patient outcomes and mortality risk
- •Guides surgical intervention decisions
- •Helps assess need for intensive care
- •Monitors hemorrhage progression over time
ABC/2 Formula Explanation
ICH Volume = A × B × C × slices ÷ shape factor
A: Maximum length (cm)
B: Width perpendicular to A (cm)
C: Slice thickness (cm)
Shape factor: 2 for ellipsoid, 3 for irregular
Common Causes of ICH
- • Hypertensive hemorrhage (most common)
- • Anticoagulant-related bleeding
- • Arteriovenous malformations
- • Cerebral aneurysm rupture
- • Head trauma
- • Amyloid angiopathy
- • Brain tumors
- • Bleeding disorders