
5-22
Operation Manual
1. Select Auto Trace from the measurement menu. The system will automatically trace the spectrum.
2. Two bars will appear at the right and left ends of the spectrum, which can then be repositioned
to redene the measurement range.
3. When Trace is complete, the measurement results are displayed on the screen.
Item Category Unit Formula
PS (Peak Systolic Velocity) Velocity cm/s or m/s
ED (End Diastolic Velocity) Velocity cm/s or m/s
TAMAX (Time Average Max Velocity) Velocity cm/s or m/s
TAMEAN (Time Average Mean Velocity) Velocity cm/s or m/s
PS/ED (Ratio of PS to ED) Calculation Ratio PS/ED
ED/PS (Ratio of ED to PS) Calculation Ratio ED/PS
RI (Resistivity Index) Calculation Ratio (PS-ED)/PS or (PS-MD)/PS
PI (Pulsatility Index) Calculation Ratio (PS-ED)/TAMAX
Heart Rate Measurement
HR (Heart Rate)
You can calculate heart rate over a certain period of time.
1. Select HR in the measurement menu. A bar appears allowing you to specify a measurement area.
2. Specify the measurement range.
X Drag and drop from the HR measurement start point to the end point; bars will be displayed at
the two points.
3. The system measures the heart rate within the specied range automatically. The measurement
results are displayed on the screen.
NOTE: When performing echocardiography, you need to select 2D > Meas. > HR before you can
enter the HR value manually.
Comentarios a estos manuales