CT Spleen Volume Calculator

Spleen Volume Formula:

\[ V = \frac{\pi}{6} \times L \times W \times H \]

Spleen Volume (cm³):

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1. What is a CT Spleen Volume Calculator?

Definition: This calculator estimates spleen volume using CT measurements based on the ellipsoid formula.

Purpose: It helps medical professionals assess spleen size for diagnostic and monitoring purposes.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

\[ V = \frac{\pi}{6} \times L \times W \times H \]

Where:

\( V \) — Volume of spleen (cm³)
\( L \) — Maximum longitudinal length (cm)
\( W \) — Maximum transverse width (cm)
\( H \) — Maximum anteroposterior height (cm)

Explanation: The formula approximates the spleen as an ellipsoid shape using three orthogonal measurements from CT scans.

3. Importance of Spleen Volume Calculation

Details: Accurate spleen volume measurement helps in diagnosing splenomegaly, monitoring disease progression, and assessing treatment response.

4. Using the Calculator

Tips: Enter the maximum measurements in centimeters from CT scans. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation method?
A: The ellipsoid formula provides a good estimate (within 10-15% of actual volume) for normal or moderately enlarged spleens.

Q2: What's a normal spleen volume range?
A: Typically 107-314 cm³ in adults, but varies by age, sex, and body size.

Q3: When would I need to calculate spleen volume?
A: For evaluating splenomegaly, portal hypertension, hematologic disorders, or monitoring spleen size changes.

Q4: Can I use ultrasound measurements?
A: While possible, CT measurements are more accurate for volume calculations.

Q5: How do I measure spleen dimensions on CT?
A: Use orthogonal measurements in all three planes on axial, coronal, and sagittal views.