1. What is Ovarian Volume?

Definition: Ovarian volume is a measurement of the size of an ovary calculated using its three dimensions (length, width, height) in an ellipsoid formula.

Purpose: It helps medical professionals assess ovarian size for fertility evaluation, polycystic ovary syndrome (PCOS) diagnosis, and monitoring ovarian tumors or cysts.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

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

Explanation: The formula approximates the ovary as an ellipsoid shape and calculates its volume based on the three perpendicular dimensions.

3. Importance of Ovarian Volume Measurement

Details: Ovarian volume is a key parameter in gynecological ultrasound examinations. Normal ovarian volume varies with age and reproductive status, with typical values ranging from 3-10 cm³ in postmenopausal women and 5-20 cm³ in premenopausal women.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why use the ellipsoid formula?
A: The ellipsoid formula provides a reasonable approximation of ovarian volume as ovaries are roughly ellipsoid in shape.

Q2: What's a normal ovarian volume?
A: Normal volume varies: 6-14 cm³ in reproductive age, 3-10 cm³ postmenopausal. Values >20 cm³ may indicate pathology.

Q3: How accurate is this calculation?
A: It's an approximation. For irregular shapes, more sophisticated methods like 3D ultrasound may be needed.

Q4: When is ovarian volume measurement important?
A: Important for evaluating PCOS (volume >10 cm³), ovarian reserve assessment, and monitoring ovarian masses.

Q5: Can I use this for pediatric patients?
A: Yes, but normal values differ significantly in children and adolescents.