Doppler Resistive Index Calculator
Result
Doppler Resistive Index Calculator The Doppler Resistive Index Calculator computes the resistive index (RI) from peak systolic velocity and end-diastolic velocity, used in vascular and renal ultrasound. For clinical education only. — free online calculator.
Formula
- Doppler Resistive Index Calculator calculates its result from Peak Systolic Velocity (PSV), End-Diastolic Velocity (EDV). It uses the formula RI = (PSV − EDV) ÷ PSV. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are Peak Systolic Velocity, End-Diastolic 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: Doppler Resistive Index
- Peak Systolic Velocity: 60 PSV
- End-Diastolic Velocity: 20 EDV
Using Peak Systolic Velocity (PSV) = 60, End-Diastolic Velocity (EDV) = 20, the calculated result is 0.6666666667.
Sample result: Calculating…
Frequently asked questions
What does the Doppler Resistive Index calculate?
Doppler Resistive Index Calculator The Doppler Resistive Index Calculator computes the resistive index (RI) from peak systolic velocity and end-diastolic velocity, used in vascular and renal ultrasound. For clinical education only. — free online calculator.
Which values should I enter?
Enter Peak Systolic Velocity, End-Diastolic Velocity using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: RI = (PSV − EDV) ÷ PSV.
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.