1. What is Normal Ovary Volume?

Definition: This calculator estimates normal ovary volume in cubic centimeters (cc) using the prolate ellipsoid formula.

Purpose: It helps medical professionals assess ovarian size, which is important for evaluating reproductive health and detecting abnormalities.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The formula approximates the ovary as an ellipsoid shape, with π/6 (≈0.52) being the constant for volume calculation of this shape.

3. Importance of Ovary Volume Measurement

Details: Normal ovary volume typically ranges between 5-15 cc in premenopausal women. Volume changes can indicate various conditions including PCOS, ovarian cysts, or menopausal status.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are normal ovary dimensions?
A: Typically 2.5-5 cm length, 1.5-3 cm width, and 0.6-1.5 cm height, varying with age and menstrual cycle.

Q2: Why use this formula instead of simple L×W×H?
A: The π/6 factor accounts for the ovary's ellipsoid shape, providing more accurate volume estimation.

Q3: How does ovary volume change with age?
A: Volume peaks in early adulthood, decreases gradually until menopause, and drops significantly post-menopause.

Q4: When is ovary volume considered abnormal?
A: Generally >20 cc in premenopausal women or >10 cc in postmenopausal women may warrant further evaluation.

Q5: Can this be used for polycystic ovaries?
A: Yes, PCOS diagnosis often includes ovary volume >10 cc (with other criteria), but individual cyst volumes may need separate calculation.