EROA Calculator
Result
EROA Calculator (PISA Method) The EROA Calculator estimates the effective regurgitant orifice area using the PISA method from the PISA radius, aliasing velocity, and peak regurgitant velocity. For clinical education only. — free online calculator.
Formula
- EROA Calculator calculates its result from PISA Radius, Aliasing Velocity, Peak Regurgitant Velocity. It uses the formula EROA = (2π·r²·V_aliasing) ÷ V_peak. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are PISA Radius, Aliasing Velocity, Peak Regurgitant Velocity. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: EROA
- PISA Radius: 0.9
- Aliasing Velocity: 40
- Peak Regurgitant Velocity: 500
Using PISA Radius = 0.9, Aliasing Velocity = 40, Peak Regurgitant Velocity = 500, the calculated result is 0.4071504079.
Sample result: Calculating…
Frequently asked questions
What does the EROA calculate?
EROA Calculator (PISA Method) The EROA Calculator estimates the effective regurgitant orifice area using the PISA method from the PISA radius, aliasing velocity, and peak regurgitant velocity. For clinical education only. — free online calculator.
Which values should I enter?
Enter PISA Radius, Aliasing Velocity, Peak Regurgitant Velocity using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: EROA = (2π·r²·V_aliasing) ÷ V_peak.
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.