
Chapter 5 Measurements and Calculations
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Measure Result Table
X Max: The maximum thickness of the Intima/Adventitia pair.
X Mean: The average thickness of the Intima/Adventitia pair.
X SD: Standard Deviation
X QI: Quality Index; the distance ratio of the point measured in the distance measured.
X Points: The total number of the measured Intima/Adventitia pairs.
Auto IMT Measurement
1. After checking the probe, application and preset, start carotid measurement.
2. If the desired images are obtained, press Freeze. Use the trackball to select an image for IMT
measurement.
3. Click Auto IMT. The Auto IMT screen will appear.
4. If scanning is performed when the center of the vessel is aligned with the center of the image area,
IMT measurement starts automatically.
5. Use the trackball and the Set button to set a location for IMT measurement.
X Select a point between Near and Far.
X If the vessel image quality is poor, select an area that is close to the Intima to be measured.
X If a detailed area has to be selected, use Range Bar.
X Press Space Bar in the keyboard to turn on/o the Intima and Adventitia Marker.
6. Once the measurement location is set, measurement values are listed in a table.
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