
5-13
Chapter 5 Measurements and Calculations
1. Select D Velocity in the Soft Menu [1]. D Velocity will appear in the user information area.
2. Specify two points and then measure the shortest distance between them. The way that it is
measured is the same as in ‘Distance.’
3. Once measurement is done, the result is displayed on the screen.
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V1 : Velocity at Point 1
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V2 : Velocity at Point 2
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PGmax : Max Pressure Gradient
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V2-V1 : Change in Velocity
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Time : Change in Time
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Acc : Acceleration
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RI : Resistivity Index
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S/D : Systolic to Diastolic Ratio
The equations used for D Velocity measurement are as follows:
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NOTE:
If Application is set to Cardiac at Utility > Measure Setup > General > Caliper, the results
including Vmax, PGmax, V2-V1, Time, and Acc will be shown on the screen.
D A/B
This is a basic measurement that is available in Spectral Doppler Mode only. You can specify two points
in a Spectral Doppler image and measure the velocity at each point to calculate the ratio of the velocity
between them.
1. Select D A/B in the Soft Menu [1]. D A/B will appear in the user information area.
2. Specify two points for which to measure velocity.
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Use the Trackball to place the cursor at the desired position and press the Set button.
3. Once measurement is done, the result is displayed on the screen.
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V1 : Velocity at Point 1
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V2 : Velocity at Point 2
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PGmax : Max Pressure Gradient
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V1/V2 : The Ratio of Velocity
NOTE:
If Application is set to Cardiac at Utility > Measure Setup > General > Caliper, the results
including Vmax, PGmax, V2-V1 will be shown on the screen.
I want to learn how to do angle correction on PW Doppler on my machine.
How do I assess PW angle cursor?
I don't want to join the group.