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 imaging.

Purpose: It helps clinicians assess prostate size for diagnostic purposes, treatment planning, and monitoring of benign prostatic hyperplasia (BPH).

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

Where:

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

Explanation: The formula approximates the prostate as an ellipsoid and calculates its volume using the three orthogonal dimensions.

3. Importance of Prostate Volume Calculation

Details: Prostate volume assessment is crucial for diagnosing BPH, planning surgical interventions, and determining 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: What imaging modalities can provide these measurements?
A: Transrectal ultrasound (TRUS) and MRI are most commonly used for prostate measurements.

Q2: What is a normal prostate volume?
A: Typically 20-30 cm³ in young men, often increasing with age (may exceed 100 cm³ in BPH).

Q3: How accurate is this ellipsoid formula?
A: It provides a good estimate (within 10-15% of actual volume) for most clinical purposes.

Q4: When would prostate weight be needed?
A: Weight can be estimated by multiplying volume by 1.05 g/cm³ (tissue density).

Q5: What's the clinical significance of prostate volume?
A: Larger volumes may correlate with worse BPH symptoms and affect treatment choices.