Measurement and Analysis
Vivid S5/Vivid S6 User Manual 305
R2424458-100 Rev. 2
2. Press FREEZE.
3. Scroll to an end-diastolic frame where the intima layer is
clearly visible.
4. Press
MEASURE.
5. Select the appropriate IMT measurement. If measuring the
IMT of the posterior wall of the right common carotid select
Rt and CCA IMT Post (Figure 7-35).
Figure 7-35: IMT Measurement menu (Right Common Carotid
Posterior IMT measurement tool)
6. Turn the Protocol soft-key OFF or ON depending on your
requirement to operate the tool arbitrarily or by a fixed
protocol.
7. If Protocol is turned OFF place the cursor in the artery
closer to the posterior wall and press
SET to anchor the start
of the search region (Figure 7-36, left).
8. Move the cursor parallel to the artery to define the end point
of the search region. Make sure the Intima and Media
layers are within the search region (indicated by the lower
dotted line in Figure 7-36, left).
9. In case Protocol is set to ON place the vertical cursor on
some anatomical reference point on the bifurcation.
10. Press
SET. This will anchor a vertical cursor on the
anatomical reference point, and an ROI box will appear on
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