Ovarian Volume Calculator Ultrasound

Ovarian Volume Formula:

\[ V = \frac{\pi}{6} \times L \times W \times H \]

Ovarian Volume (cm³):

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1. What is an Ovarian Volume Calculator?

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

Purpose: It helps medical professionals assess ovarian size for fertility evaluation, PCOS diagnosis, and monitoring ovarian conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V = \frac{\pi}{6} \times L \times W \times H \]

Where:

\( V \) — Ovarian volume (cm³)
\( L \) — Maximum length (cm)
\( W \) — Maximum width (cm)
\( H \) — Maximum height (cm)

Explanation: The formula calculates the volume of an ellipsoid, which approximates the shape of the ovary.

3. Importance of Ovarian Volume Measurement

Details: Ovarian volume is a key parameter in assessing ovarian reserve, diagnosing PCOS (typically >10 cm³ per ovary), and evaluating ovarian masses.

4. Using the Calculator

Tips: Enter the three orthogonal dimensions (length, width, height) measured via ultrasound in centimeters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal ovarian volume?
A: In premenopausal women, normal volume is typically 3-10 cm³ per ovary. Postmenopausal ovaries are usually <3 cm³.

Q2: Why use the ellipsoid formula?
A: The ellipsoid formula provides a good approximation of ovarian volume as ovaries are roughly ellipsoid in shape.

Q3: How accurate is ultrasound for ovarian volume?
A: Transvaginal ultrasound is highly accurate (within 5-10%) when proper measurement techniques are used.

Q4: When is ovarian volume measurement important?
A: Important for PCOS diagnosis, fertility assessment, ovarian reserve evaluation, and monitoring ovarian cysts/tumors.

Q5: How many measurements should be taken?
A: Best practice is to take 3 measurements of each dimension and use the average for most accurate results.