1. What is Prostate Volume Calculation by Ultrasound?

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

Purpose: It helps urologists and radiologists assess prostate size for diagnosing conditions like 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, craniocaudal dimension)
• \( W \) — Width (cm, transverse dimension)
• \( H \) — Height (cm, anteroposterior dimension)

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

3. Importance of Prostate Volume Measurement

Details: Accurate volume measurement helps in assessing prostate health, planning treatments, and monitoring disease progression.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why use the ellipsoid formula?
A: It's the most widely accepted method for prostate volume estimation from ultrasound measurements.

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

Q3: How accurate is this method?
A: It's about 90% accurate compared to more precise methods like MRI or water displacement.

Q4: Can I use this for prostate cancer assessment?
A: Volume is one factor, but always consult additional diagnostic tests for cancer evaluation.

Q5: How do I get these measurements?
A: Measurements are typically taken during transrectal ultrasound (TRUS) examination.