1. What is the Prostate Volume Calculator?

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

Purpose: It helps medical professionals assess prostate size for diagnostic and treatment purposes.

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

• \( V \) — Prostate volume (cm³)
• \( L \) — Length (cm)
• \( W \) — Width (cm)
• \( H \) — Height (cm)

Explanation: The formula approximates the prostate as an ellipsoid shape, with π/6 being the volume correction factor for this geometry.

3. Importance of Prostate Volume Calculation

Details: Prostate volume measurement is crucial for diagnosing BPH (benign prostatic hyperplasia), assessing cancer risk, and planning surgical interventions.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What's a normal prostate volume?
A: Typically 20-30 cm³ in young men, often increasing with age (may exceed 100 cm³ in BPH).

Q2: How accurate is this calculation?
A: It provides a good estimate, though actual prostate shape may vary from a perfect ellipsoid.

Q3: What imaging modalities provide these measurements?
A: Transrectal ultrasound (TRUS) is most common, but CT or MRI can also be used.

Q4: How does volume relate to PSA levels?
A: PSA density (PSA/volume) is often more clinically relevant than PSA alone.

Q5: When is prostate volume most important?
A: For BPH assessment, surgical planning, and evaluating prostate cancer risk.