Samsung MYSONO U6 User Manual Page 203

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5-27
Chapter 5 Measurements and Calculations
Manual Trace
A spectrum can be traced manually. This function is enabled in the menu in Spectral Doppler Mode.
1. Select Manual Trace in the measurement menu. A measurement cursor appears over a spectrum.
2. Trace the spectrum. The measuring method is the same as in ‘D Trace.
3. When the Trace is complete, the measurement results are displayed on the screen.
Itemized Measurement
In the Measurement menu, select an individual item and take a measurement.
1. Press the Calculator button after obtaining a desired image.
2. Select a desired item in the measurement menu. The ‘+’ cursor appears over a spectral waveform.
3. Position the ‘+’ cursor and press the Set button.
4. The measurement results for the selected item are displayed on the screen.
The following measurements are taken from doppler spectrums:
Item Type Unit Equation
PSV (Peak Systolic Velocity) Velocity cm/s or m/s
EDV (End Diastolic Velocity) Velocity cm/s or m/s
TAMV (Time Average Mean Velocity) Velocity cm/s or m/s
TAPV (Time Average Peak Velocity) Velocity cm/s or m/s
PGmean (Mean Pressure Gradient) Calculation mmHg
PGmax (Max Pressure Gradient), Calculation mmHg 4 × PSV
2
S/D (Ratio of PSV to EDV) Calculation Ratio PSV / EDV
D/S (Ratio of EDV to PSV) Calculation Ratio EDV /PSV
RI (Resistivity Index) Calculation Ratio (PSV – EDV) / PSV
PI (Pulsatility Index) Calculation Ratio (PSV – EDV) / TAPV
Tips!
Taking measurements via Auto Calc
You can use Auto Calc to measure predetermined items.
For information on configuring these measurements, refer to the Auto Calc’ section in ‘Chapter 7.
Utilities’.
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