Bladder Scan Volume Calculation

Bladder Volume Formula:

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

Bladder Volume (cm³):

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1. What is Bladder Scan Volume Calculation?

Definition: This calculator estimates bladder volume from ultrasound measurements using the ellipsoid formula.

Purpose: It helps medical professionals assess bladder volume non-invasively for urological evaluations.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

\( V \) — Volume of bladder (cm³)
\( L \) — Maximum length (cm)
\( W \) — Maximum width (cm)
\( H \) — Maximum height (cm)

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

3. Importance of Bladder Volume Calculation

Details: Accurate bladder volume measurement helps diagnose urinary retention, assess post-void residuals, and guide catheterization decisions.

4. Using the Calculator

Tips: Enter the maximum dimensions (length, width, height) in centimeters from the bladder ultrasound. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: The ellipsoid formula provides a good estimate (within 10-15% of actual volume) for most bladder shapes.

Q2: What's a normal bladder volume?
A: Typical capacity is 300-500 cm³, but varies by age, gender, and individual factors.

Q3: When would this calculation be used?
A: Commonly used in urology, post-operative care, and for patients with urinary dysfunction.

Q4: How do I measure the dimensions?
A: Use ultrasound calipers to measure the maximum dimensions in three orthogonal planes.

Q5: Can this be used for other organs?
A: The ellipsoid formula can estimate volume for other roughly ellipsoid structures like the prostate or ovarian follicles.