1. What is a Normal Ovarian Volume?

Definition: This calculator estimates the volume of an ovary using the ellipsoid formula, with normal range typically between 5-15 cm³.

Purpose: It helps medical professionals assess ovarian size for diagnostic purposes, particularly in gynecological and fertility evaluations.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

• \( V \) — Volume of ovary (cubic centimeters)
• \( L \) — Maximum length (cm)
• \( W \) — Maximum width (cm)
• \( H \) — Maximum height (cm)

Explanation: The formula approximates the ovary as an ellipsoid shape, which is the standard method for ovarian volume calculation in ultrasound measurements.

3. Importance of Ovarian Volume Measurement

Details: Ovarian volume is an important parameter in assessing ovarian reserve, diagnosing PCOS (typically >10 cm³), and monitoring ovarian tumors or cysts.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is considered a normal ovarian volume?
A: In premenopausal women, normal ovarian volume typically ranges between 5-15 cm³, with variations during menstrual cycle.

Q2: How does ovarian volume change with age?
A: Volume decreases with age, especially after menopause (typically <5 cm³ in postmenopausal women).

Q3: When is ovarian volume measurement most useful?
A: For evaluating PCOS (often enlarged ovaries), assessing ovarian reserve, or monitoring ovarian masses.

Q4: How accurate is this calculation method?
A: The ellipsoid formula provides a good approximation, though 3D ultrasound may offer more precise volume measurements.

Q5: Should both ovaries be measured?
A: Yes, both ovaries should be measured separately as they may differ in size.