[Glossary] PW mode measurement

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The glossary of “Auto Measure”

  • HR (bpm)ļ¼šHeart rate
  • PSV (cm/s)ļ¼šPeak systolic velocity
  • EDV (cm/s)ļ¼šEnd diastolic velocity
  • PIļ¼šPulsatility index (of Gosling)
    • PI = (PSVā€“EDV)/MV
    • MV (cm/s)ļ¼šMean velocity
  • RIļ¼šResistance index (of Pourcelot)
    • RI = (PSVā€“EDV)/PSV
  • VTI (cm)ļ¼šVelocity-time integral
  • TAV Max (cm/s)ļ¼šThe maximum of time-averaged velocity
  • S/Bļ¼šThe average RI of a cycle
  • S/Dļ¼šSystolic/Diastolic Ratio
    • S/D = PSV/EDV
  • ACCL (cm/sĀ²)ļ¼šThe acceleration index
    • ACCL = (PSV ā€“ EDV)/ACCT
  • ACCT (s)ļ¼šThe time from the lowest (EDV) to the highest (PSV)
  • VFM (ml/min)ļ¼šVolume flow per minute
  • VFM Max (ml/min)ļ¼šThe maximum of volume flow per minute
  • Diam (mm) ļ¼šDiameter

āš VFM, VFM Max, Diam values will be shown when you are in the frozen state.

The glossary of measure tool “PW V, T, HR”

  • T (s)ļ¼šTime
  • HR (bpm)ļ¼šHeart rate
  • Range (cm/s)ļ¼šThe range of flow velocity

The glossary of measure tool “RI, S/D”

  • PSV (cm/s)ļ¼šPeak systolic velocity
  • EDV (cm/s)ļ¼šEnd diastolic velocity
  • S/Dļ¼šSystolic/Diastolic Ratio
    • S/D = PSV/EDV
  • RIļ¼šResistance index (of Poucelot)
    • RI = (PSVā€“EDV)/PSV

The glossary of measure tool “PI”

  • PSV (cm/s)ļ¼šPeak systolic velocity
  • D (cm/s)ļ¼šEnd diastolic velocity
  • Area (cmĀ²)ļ¼šBlood vessel cross-sectional area
  • Diam (mm)ļ¼šDiameter
  • PIļ¼šPulsatility index (of Gosling)
    • PI = (PSVā€“EDV)/MV
    • MV (cm/s)ļ¼šMean velocity
  • VFM Max (ml/min)ļ¼šThe maximum of volume flow per minute
  • TAV Max (cm/s)ļ¼šThe maximum of time-averaged velocity

The glossary of measure tool “VTI”

  • VTI (cm)ļ¼šVelocity-time integral

The glossary of measure tool “E/A Ratio”

  • E Vel. (cm/s): E wave velocity
  • A Vel. (cm/s): A wave velocity
  • E/A Ratio: Ratio of E- to A-wave velocities
  • DT (ms): Deceleration time, early filling velocity, time interval from peak E-wave along the slope of LV filing extrapolated to the zero-velocity baseline.
  • DT Slope (cm/sĀ²): Deceleration Slope