Doppler Resistive Index (Pourcelot)
Pourcelot index (standard definition)Calculates the arterial resistive index (PSV - EDV) / PSV from spectral Doppler velocities and flags elevation against the usual native-renal threshold of about 0.70.
Also searched as: ultrasound · renal · transplant kidney · hemodynamics · ri
Information
Incomplete input
- Please provide: peak systolic velocity, end-diastolic velocity.
How this tool works
The resistive (Pourcelot) index condenses the arterial Doppler waveform into a single dimensionless number reflecting downstream vascular resistance. In native kidneys an index below roughly 0.70 is typical; higher values accompany intrinsic parenchymal disease, obstruction, and transplant dysfunction, while an index of 1.0 or more indicates absent or reversed end-diastolic flow. Thresholds are organ- and context-specific, so the number must be read against the vascular bed being examined.
References
Implemented from the cited published sources. Educational use only; confirm against current guidelines before clinical use.
Clinical questions that use this
Vetting guides that reach for this tool.
Related calculators
Same subspecialty, overlapping subject matter.