Bladder Volume Calculator CT

Bladder Volume Formula:

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

Bladder Volume (cm³):

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1. What is a Bladder Volume Calculator CT?

Definition: This calculator estimates bladder volume using CT measurements based on the ellipsoid formula.

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

2. How Does the Calculator Work?

The calculator uses the ellipsoid formula:

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

Where:

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

Explanation: The formula approximates the bladder as an ellipsoid shape, which is commonly used in radiological measurements.

3. Importance of Bladder Volume Calculation

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

4. Using the Calculator

Tips: Enter the maximum length, width, and height measurements from CT scans in centimeters. 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 not account for irregular bladder shapes. Accuracy is typically ±15-20%.

Q2: What's the clinical significance of bladder volume?
A: It helps diagnose conditions like urinary retention, neurogenic bladder, and assess post-void residual volume.

Q3: Can I use ultrasound measurements with this calculator?
A: Yes, but ultrasound typically uses a different formula (0.52 × L × W × H) which accounts for compression effects.

Q4: What's a normal bladder volume range?
A: Typically 300-500 cm³ in adults, but varies with age, gender, and individual factors.

Q5: How do I measure the dimensions on CT?
A: Use the longest axis in each dimension (length, width, height) from axial, sagittal, and coronal views.