1. What is Splenic Size by Age Radiology?

Definition: This calculator estimates splenic volume using the ellipsoid formula adjusted for age norms in radiology.

Purpose: Helps radiologists and clinicians assess whether splenic size falls within normal ranges for a patient's age.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

• \( V \) — Splenic volume (cm³)
• \( L \) — Maximum length (cm)
• \( W \) — Maximum width (cm)
• \( H \) — Maximum height (cm)

Explanation: The formula approximates the spleen as an ellipsoid shape, with π/6 (≈0.52) as the correction factor for this geometry.

3. Importance of Splenic Volume Calculation

Details: Accurate splenic volume measurement helps diagnose conditions like splenomegaly (enlarged spleen) or splenic atrophy.

4. Using the Calculator

Tips: Enter measurements obtained from ultrasound, CT, or MRI in centimeters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are normal splenic dimensions by age?
A: Normal ranges vary, but adult spleen is typically 10-12 cm in length, 7-8 cm in width, and 3-4 cm in thickness.

Q2: How does splenic size change with age?
A: The spleen grows during childhood, peaks in young adulthood, and may gradually decrease in size with advanced age.

Q3: When is splenic volume more useful than linear measurements?
A: Volume is more accurate when the spleen is irregularly enlarged or when precise monitoring of size changes is needed.

Q4: What imaging modality is best for splenic measurements?
A: Ultrasound is most common, but CT and MRI provide more accurate volume measurements when needed.

Q5: What conditions affect splenic size?
A: Portal hypertension, infections, hematologic disorders, and storage diseases can cause enlargement; sickle cell disease may cause atrophy.