1. What is a Testicular Volume Ultrasound Calculator?

Definition: This calculator estimates testicular volume using ultrasound measurements based on the ellipsoid formula.

Purpose: It helps medical professionals assess testicular size, which is important for evaluating fertility, puberty development, and various medical conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The formula calculates the volume of an ellipsoid, which approximates the shape of the testis more accurately than simple length measurements.

3. Importance of Testicular Volume Measurement

Details: Testicular volume correlates with spermatogenesis and is used to evaluate conditions like varicocele, hypogonadism, and precocious or delayed puberty.

4. Using the Calculator

Tips: Enter the three orthogonal measurements (length, width, height) obtained from ultrasound in centimeters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use ultrasound measurements instead of orchidometer?
A: Ultrasound provides more accurate and objective measurements compared to the subjective orchidometer beads.

Q2: What's the normal testicular volume range?
A: Normal adult testicular volume is typically 15-25 cm³, but varies by age and individual.

Q3: How should measurements be taken?
A: Measure the longest axis (length), greatest anteroposterior dimension (height), and greatest transverse dimension (width) on ultrasound.

Q4: Why use the ellipsoid formula?
A: The testis approximates an ellipsoid shape, making this formula more accurate than simpler calculations.

Q5: How does volume correlate with fertility?
A: Generally, larger testicular volume correlates with better spermatogenesis, though exceptions exist.