1. What is a Testicular Volume Calculator?

Definition: This calculator estimates testicular volume based on length, width, and height measurements from radiological imaging.

Purpose: It helps radiologists and urologists assess testicular size for diagnostic and monitoring purposes.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

• \( V \) — Volume (cubic centimeters)
• \( L \) — Length (centimeters)
• \( W \) — Width (centimeters)
• \( H \) — Height (centimeters)

Explanation: The formula approximates the testis as an ellipsoid, with π/6 (≈0.5236) being the ellipsoid constant.

3. Importance of Testicular Volume Measurement

Details: Testicular volume assessment is crucial for evaluating puberty development, fertility status, and detecting abnormalities like atrophy or tumors.

4. Using the Calculator

Tips: Enter measurements obtained from ultrasound or other imaging modalities. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What imaging modalities can provide these measurements?
A: Ultrasound is most common, but measurements can also be taken from MRI or CT scans.

Q2: What is the normal range for testicular volume?
A: Adult testes typically range 15-25 cm³, with variations by age and pubertal stage.

Q3: Why use the ellipsoid formula instead of water displacement?
A: The formula provides a non-invasive method suitable for radiological practice, with good correlation to actual volume.

Q4: How accurate is this calculation?
A: It's clinically accepted with about 90% accuracy compared to orchidometry.

Q5: Should both testes be measured separately?
A: Yes, always measure and calculate each testis separately as they may differ in size.