Description
Return a hydrostatic pressure-offset correction.
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 hydrostatic pressure-offset correction.
When to use this tool
Use Pressure Transducer Hydrostatic Offset Term when checking one supplied cardiac measurement, geometry or calibration term.
How to use the tool and how it works
- Enter fluidDensity, gravity, heightDifference, pressurePa. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read offsetPa, correctedPressurePa. Use the output convention below.
Return a hydrostatic pressure-offset correction. Require fluidDensity/gravity > 0; offsetPa = rho*g*heightDifference, correctedPressurePa = pressurePa-offsetPa.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| fluidDensity | Fluid Density | Required. Finite number; strictly above 0. |
| gravity | Gravity | Required. Finite number; strictly above 0. |
| heightDifference | Signed vertical height difference in metres under the stated offset direction. | Required. Finite number. |
| pressurePa | Pressure Pa | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| offsetPa | fluidDensity*gravity*heightDifference; subtracted from pressurePa. | Required. Finite number. |
| correctedPressurePa | Corrected Pressure Pa | Required. Finite number. |
{
"input": {
"fluidDensity": 1000,
"gravity": 9.8,
"heightDifference": 0.1,
"pressurePa": 2000
},
"output": {
"offsetPa": 980,
"correctedPressurePa": 1020
}
}Limitations and assumptions
- Use kg/m³, m/s² and signed metres for pascals; height sign and measurement geometry are supplied, not clinically verified.
- 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
- Pressure Wave Baseline Offset
Return baseline-corrected and reference-shifted waveform pressure.
- Pressure Zero Reference Gap
Compare two pressure values after separate zero correction.