Volume of Prostate Calculator

Prostate Volume Formula:

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

Prostate Volume (cm³):

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1. What is a Prostate Volume Calculator?

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

Purpose: It helps medical professionals assess prostate size, which is important in diagnosing and monitoring conditions like benign prostatic hyperplasia (BPH).

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

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

Where:

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

Explanation: The formula approximates the prostate as an ellipsoid shape, which is a common method in urological practice.

3. Importance of Prostate Volume Calculation

Details: Prostate volume assessment helps in diagnosing BPH, planning surgical interventions, and determining appropriate medication dosages.

4. Using the Calculator

Tips: Enter the prostate dimensions (length, width, height) in centimeters as measured by ultrasound or MRI. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: The ellipsoid formula provides a good estimate (±10-15%) when compared to more precise methods like planimetry.

Q2: What's a normal prostate volume?
A: Typically 20-30 cm³ in young men, may increase to 30-100 cm³ with age due to BPH.

Q3: How is prostate volume related to PSA levels?
A: Generally, larger prostates produce more PSA (about 0.1 ng/mL per cm³ of tissue).

Q4: Can I use this for post-surgical volume estimation?
A: The formula works best for intact prostates; surgical cavities may require different methods.

Q5: What imaging methods provide these measurements?
A: Transrectal ultrasound (TRUS) is most common, but CT or MRI can also be used.