Description
Return a trapezoidal pressure-time panel with baseline adjustment.
Cardiac measurement formulas depend on geometry, units, calibration and reference origins. A Doppler projection correction, echo disc-volume contribution or waveform integral evaluates supplied quantities without validating image acquisition, signal quality or physiological interpretation.
Return a trapezoidal pressure-time panel with baseline adjustment.
When to use this tool
Use Cardiac Waveform Pressure Time One Panel when checking one supplied cardiac measurement, geometry or calibration term.
How to use the tool and how it works
- Enter firstPressure, secondPressure, startTime, endTime, baselinePressure. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read rawPressureTime, aboveBaselinePressureTime. Use the output convention below.
Return a trapezoidal pressure-time panel with baseline adjustment. Require endTime >= startTime; rawPressureTime = mean endpoint pressure*duration, aboveBaselinePressureTime subtracts baseline*duration.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstPressure | First Pressure | Required. Finite number. |
| secondPressure | Second Pressure | Required. Finite number. |
| startTime | Start Time | Required. Finite number. |
| endTime | End Time | Required. Finite number. |
| baselinePressure | Baseline Pressure | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| rawPressureTime | Raw Pressure Time | Required. Finite number. |
| aboveBaselinePressureTime | Above Baseline Pressure Time | Required. Finite number. |
{
"input": {
"firstPressure": 80,
"secondPressure": 120,
"startTime": 0,
"endTime": 0.5,
"baselinePressure": 70
},
"output": {
"rawPressureTime": 50,
"aboveBaselinePressureTime": 15
}
}Limitations and assumptions
- Signed area is retained; this is one linear-panel approximation, not a complete pressure waveform integral or clinical measure.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use validated acquisition and calibration, a complete appropriate measurement method and qualified clinical interpretation; assess measurement uncertainty and model assumptions separately.
References
Similar or alternative tools
- Cardiology Waveform One Beat Baseline
Return baseline-corrected beat samples, rectangular area and mean.
- Pressure Transducer Hydrostatic Offset Term
Return a hydrostatic pressure-offset correction.