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Medical ImagingGenerated accuracy model review: 2026-05-06
Doppler Indices accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- RI = (PSV - EDV) / PSV
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Peak Systolic (PSV): 100 cm/s
- End Diastolic (EDV): 30 cm/s
Expected outputs
- Resistive Index (RI): 0.7
- S/D Ratio: 3.33
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- The formula assumes the Doppler sample and waveform tracing were acquired correctly and consistently.
- Interpretive cutoffs vary by organ system, gestational age, transplant status, and institutional protocol.
- These indices support waveform review but do not establish a diagnosis on their own.
Unit handling
- Peak Systolic (PSV) accepts values in cm/s.
- End Diastolic (EDV) accepts values in cm/s.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current doppler-indices-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Doppler Indices.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.