MCA Peak Systolic Velocity Calculator
Actual already clinically qualified MCAvelocity samples with independently established angle correction, not a recovered continuous systolic peak, anemia determination or threshold/MoM.
Description
Middle-cerebral-artery peak systolic velocity is a Doppler measurement tied to a qualifying waveform and acquisition geometry.
Middle-cerebral-artery peak systolic velocity is a Doppler measurement tied to a qualifying waveform and acquisition geometry.1
A sampled maximum with a supplied correction factor is distinct from a full clinical interpretation.
When to use MCA Peak Systolic Velocity Calculator
Use this tool to calculate or review the supplied observations under the stated rules. Establish the observation date, units, measurement context and independently applicable clinical reference or calibrated model.
How to use MCA Peak Systolic Velocity Calculator and understand its results
- Establish the observation date, units, measurement context and independently applicable clinical reference or calibrated model.
- Enter independentlyMeasuredMcaVelocitiesCmPerSecond, callerVerifiedAngleCorrectionFactor, using the field meanings and rules below, then run the tool.
- Read result.observedAngleCorrectedSampledMcaPeakCmPerSecond. Use the units and sign conventions below.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| independentlyMeasuredMcaVelocitiesCmPerSecond | Independently measured mca velocities cm per second | list of number | Required |
| callerVerifiedAngleCorrectionFactor | Caller verified angle correction factor | number | Required |
Require a nonempty nonnegative sampled velocity list and positive supplied angle-correction factor. Multiply the maximum sample by that factor. The factor is not inferred from an angle or restricted to at least one.
conditionalPeakCmPerS=max(samplesCmPerS)×callerCorrectionFactor Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result; its nested fields below contain the actual calculation or selected reference | object |
| result.observedAngleCorrectedSampledMcaPeakCmPerSecond | Observed Angle Corrected Sampled Mca Peak Cm Per Second | number |
{
"input": {
"independentlyMeasuredMcaVelocitiesCmPerSecond": [
20,
50,
40
],
"callerVerifiedAngleCorrectionFactor": 1
},
"output": {
"result": {
"observedAngleCorrectedSampledMcaPeakCmPerSecond": 50
}
}
}Limitations and assumptions
Dating evidence, acquisition conditions and applicable clinical references remain independently established. The output describes supplied observations or a conditional model without diagnosing an outcome, choosing a dose or verifying clinical applicability.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries; ordinary string lists allow at most 128 strings of 128 UTF-16 units each; numeric matrices allow at most 128 rows and 128 columns, subject to narrower requirements above. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Uterine Artery PI Calculator: Uterine-artery pulsatility index compares systolic-to-diastolic velocity excursion with a cycle-mean velocity. For a complementary comparison, use Umbilical Artery PI Calculator: Umbilical-artery pulsatility index expresses waveform velocity excursion relative to its cycle mean.
References
-
MCA Peak Systolic Velocity Calculator — tool.io
Similar or alternative tools
- Uterine Artery PI Calculator
Uterine-artery pulsatility index compares systolic-to-diastolic velocity excursion with a cycle-mean velocity.
- Umbilical Artery PI Calculator
Umbilical-artery pulsatility index expresses waveform velocity excursion relative to its cycle mean.