[Glossary] PW mode measurement
The glossary of “Auto Measure”
- HR (bpm):Heart rate
- PSV (cm/s):Peak systolic velocity
- EDV (cm/s):End diastolic velocity
- PI:Pulsatility index (of Gosling)
- PI = (PSV–EDV)/MV
- MV (cm/s):Mean velocity
- RI:Resistance index (of Pourcelot)
- RI = (PSV–EDV)/PSV
- VTI (cm):Velocity-time integral
- TAV Max (cm/s):The maximum of time-averaged velocity
- S/B:The average RI of a cycle
- SD:Systolic/Diastolic Ratio
- SD = PSV/EDV
- ACCL (cm/s²):The acceleration index
- ACCL = (PSV – EDV)/ACCT
- ACCT (s):The time from the lowest (EDV) to the highest (PSV)
- VFM (ml/min):Volume flow per minute
- VFM Max (ml/min):The maximum of volume flow per minute
- Diam (mm) :Diameter
⚠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):Time
- HR (bpm):Heart rate
- Range (cm/s):The range of flow velocity
The glossary of measure tool “RI, S/D”
- PSV (cm/s):Peak systolic velocity
- EDV (cm/s):End diastolic velocity
- S/D:Systolic/Diastolic Ratio
- SD = PSV/EDV
- RI:Resistance index (of Poucelot)
- RI = (PSV–EDV)/PSV
The glossary of measure tool “PI”
- PSV (cm/s):Peak systolic velocity
- D (cm/s):End diastolic velocity
- Area (cm²):Blood vessel cross-sectional area
- Diam (mm):Diameter
- PI:Pulsatility index (of Gosling)
- PI = (PSV–EDV)/MV
- MV (cm/s):Mean velocity
- VFM Max (ml/min):The maximum of volume flow per minute
- TAV Max (cm/s):The maximum of time-averaged velocity
The glossary of measure tool “VTI”
- VTI (cm):Velocity-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/s²): Deceleration Slope