1. What is a Prostate Volume Calculator?

Definition: This calculator estimates prostate volume using the ellipsoid formula based on length, width, and height measurements from radiology imaging.

Purpose: It helps radiologists and urologists assess prostate size for diagnostic and treatment planning purposes.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

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

Explanation: The formula approximates the prostate as an ellipsoid shape, which is standard practice in radiological measurements.

3. Importance of Prostate Volume Calculation

Details: Prostate volume assessment is crucial for diagnosing benign prostatic hyperplasia (BPH), planning surgical interventions, and calculating PSA density.

4. Using the Calculator

Tips: Enter the maximum length, width, and height measurements from TRUS or MRI in centimeters. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why use the ellipsoid formula?
A: It provides a quick, standardized method for volume estimation that correlates well with more complex measurements.

Q2: What imaging modalities can provide these measurements?
A: Transrectal ultrasound (TRUS), MRI, and CT scans can all provide the necessary dimensions.

Q3: What is a normal prostate volume?
A: Typically 20-30 cm³ in young men, often increasing with age (may exceed 40 cm³ in BPH).

Q4: How accurate is this calculation?
A: It's an approximation - actual prostate shape may vary from a perfect ellipsoid.

Q5: Can this be used for prostate cancer assessment?
A: Yes, volume is one factor in assessing prostate cancer risk and calculating PSA density.