Stress Echo
222 Vivid S5/Vivid S6 User Manual
R2424458-100 Rev. 2
Figure 5-12: Vpeak QTVI Stress display
V-peak measurement interpretation
The systolic Vpeak in the tissue velocity profile is automatically
detected and highlighted by a vertical bar (see Figure 5-12).
The automatically detected Vpeak should be visually verified by
the user. In addition Vpeak thresholds are displayed as
color-coded horizontal lines (see Figure 5-12). These
thresholds represent statistical guideline values for peak
velocity at peak stress level (Dobutamine stress procedure) for
the three apical views. Only threshold values for basal and
mid-segments for each apical view are defined (see
"References" on page 224). The result is highlighted by a
color-coding of the thresholds lines, the color-coding in the 2D
image and the scoring bullet (see Figure 5-12).
1. Threshold for current segment (green)
2. Sampling point
3. Current segment
4. Vpeak threshold for current segment
5. Color-coded tissue velocity
6. Result window with tissue velocity profile
Color-coding (velocity thresholds and tissue):
• Green: velocities above threshold value
• Yellow: velocities near threshold (0 to -10% interval)
• White: velocities below threshold value - 10%
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