Prostate Volume Formula:
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Definition: This calculator estimates the volume of the prostate in cubic centimeters based on its length, width, and height measurements.
Purpose: It helps medical professionals assess prostate size, which is important for diagnosing conditions like benign prostatic hyperplasia (BPH).
The calculator uses the prolate ellipsoid formula:
Where:
Explanation: The formula approximates the prostate as an ellipsoid shape, with π/6 (approximately 0.52) being the correction factor for this shape.
Details: Prostate volume assessment helps in evaluating BPH, planning surgical procedures, and determining PSA density (PSA divided by prostate volume).
Tips: Enter the prostate dimensions in centimeters as measured by TRUS (transrectal ultrasound) or MRI. All values must be > 0.
Q1: What is a normal prostate volume?
A: Typically 20-30 cm³ in young men, may increase to 30-50 cm³ with age.
Q2: How accurate is this calculation?
A: It's an estimation; actual volume may vary by about 10-15% from true volume.
Q3: When is prostate volume measurement needed?
A: For evaluating BPH symptoms, pre-surgical planning, and calculating PSA density.
Q4: What imaging methods measure prostate dimensions?
A: TRUS (most common), MRI, or CT scans can provide these measurements.
Q5: How does prostate volume relate to PSA?
A: PSA density (PSA divided by volume) helps distinguish between BPH and prostate cancer.