1. What is Testicular Volume Calculation?

Definition: This calculator estimates testicular volume using the ellipsoid formula based on length, width, and height measurements from ultrasound or other imaging.

Purpose: It helps radiologists and urologists assess normal testicular size (typically 10-20 cm³ in adults) and identify potential abnormalities.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

• \( V \) — Volume (cm³)
• \( L \) — Length (cm)
• \( W \) — Width (cm)
• \( H \) — Height (cm)

Explanation: The formula approximates the testis as an ellipsoid, with π/6 (~0.52) being the correction factor for this shape.

3. Importance of Testicular Volume Measurement

Details: Volume assessment is crucial for evaluating puberty development, fertility potential, and detecting conditions like atrophy, varicocele, or tumors.

4. Using the Calculator

Tips: Enter measurements in centimeters from ultrasound or caliper measurements. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is normal testicular volume?
A: Typically 15-25 cm³ in adults, with 12-30 cm³ considered normal range. Prepubertal testes are <4 cm³.

Q2: How accurate is this formula?
A: It's ~80% accurate compared to water displacement (gold standard). Ultrasound measurements may slightly overestimate.

Q3: When should I be concerned about volume?
A: If volume is <12 cm³ in adults, or if there's >2 cm³ difference between testes.

Q4: Can I use this for pediatric patients?
A: Yes, but normal values vary by age. Use pediatric reference charts for interpretation.

Q5: What's the clinical significance of testicular volume?
A: Correlates with sperm production, testosterone levels, and can indicate various medical conditions.