1. What is a Bladder Volume Calculator?

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

Purpose: It helps medical professionals assess bladder capacity and volume for diagnostic purposes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The formula calculates the volume of an ellipsoid, which approximates the shape of a bladder.

3. Importance of Bladder Volume Calculation

Details: Accurate bladder volume estimation helps in diagnosing urinary retention, assessing bladder function, and planning treatments.

4. Using the Calculator

Tips: Enter the length, width, and height measurements in centimeters obtained from ultrasound or other imaging techniques. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: The ellipsoid formula provides a good estimate but may vary from actual volume due to individual bladder shape variations.

Q2: What imaging techniques provide these measurements?
A: Ultrasound is most common, but CT or MRI can also provide the necessary dimensions.

Q3: What's a normal bladder volume?
A: Average capacity is 400-600 mL, but this varies with age, gender, and individual factors.

Q4: Should the bladder be full or empty when measuring?
A: Typically measured when full to assess maximum capacity, but post-void residual can also be important.

Q5: How do I convert cm³ to mL?
A: They are equivalent (1 cm³ = 1 mL), so no conversion is needed.