Prostate Volume Formula:
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Definition: This calculator estimates prostate volume using MRI measurements based on the ellipsoid formula.
Purpose: It helps medical professionals assess prostate size for diagnostic and treatment planning purposes.
The calculator uses the formula:
Where:
Explanation: The formula approximates the prostate as an ellipsoid and calculates its volume using the three orthogonal dimensions.
Details: Accurate prostate volume measurement is crucial for diagnosing benign prostatic hyperplasia (BPH), planning prostate surgeries, and assessing prostate cancer risk.
Tips: Enter the length, width, and height measurements from MRI in centimeters. All values must be > 0.
Q1: Why use the ellipsoid formula?
A: It provides a quick and reasonably accurate estimate of prostate volume without requiring complex imaging analysis.
Q2: How accurate is this method?
A: It typically correlates well with planimetric measurements (within 10-15%) for regularly shaped prostates.
Q3: What's a normal prostate volume?
A: Typically 20-30 cm³ for young men, often increasing with age (may reach 40-60 cm³ in BPH).
Q4: Can this be used with ultrasound measurements?
A: Yes, though MRI measurements are generally more precise due to better soft tissue resolution.
Q5: How does volume relate to prostate weight?
A: Volume in cm³ roughly equals weight in grams (assuming tissue density of 1.05 g/cm³).