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Operation Manual
Velocity
This is a basic measurement that is only available in Spectral Doppler mode. Specify one point on a
Spectral Doppler image to measure the velocity.
NOTE: In a Spectral Doppler image, the X- and Y-axes represent time and velocity, respectively.
1. Select Velocity on the monitor or touch screen.
2. Specify a point.
3. When the measurement is nished, its result is shown on the screen.
Accel
This is a basic measurement that is only available in Spectral Doppler mode. Specify two points on a
Spectral Doppler image and measure the velocity at each point to calculate the time and acceleration.
1. Select Accel on the monitor or touch screen.
2. Specify two points and measure the length of the straight line between the points. Measurement is
taken in the same way as ‘Distance’.
3. When the measurement is nished, its result is shown on the screen.
The equation for measuring Accel is as follows:
X
RI
This is a basic measurement that is only available in Spectral Doppler mode. Specify two points on a
Spectral Doppler image and measure the velocity at each point to calculate the Resistivity Index (RI).
1. Tap RI on the touch screen.
2. Specify two points and measure the length of the straight line between the points. Measurement is
taken in the same way as ‘Distance’.
3. When the measurement is nished, its result is shown on the screen.
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