Measurement and Analysis
266 Vivid S5/Vivid S6 User Manual
R2424458-100 Rev. 2
The following event timing measurements are available
(with the first measurement on the list selected):
• AVO: Aortic Valve Opening
• AVC: Aortic Valve Closure
• MVO: Mitral Valve Opening
• MVC: Mitral Valve Closure
5. Trackball the cursor to the corresponding point on the
spectrum for the selected measurement.
6. Press
SET to anchor the point.
The event timing measurement (ms) is displayed in the
Measurement result table.
When an event timing measurement is performed, the
QRS markers are displayed on the ECG trace and correct
QRS marker position should be verified before the Event
Timing measurements are performed.
TSI Measurements
Each sample in the TSI image represents the time to the
maximum
velocity within the chosen TSI search interval from
TSI Start to TSI End. (See page 189 on how to set the TSI
search interval.)
There are two automatic TSI time to peak measurement tools:
• Generic TSI Time to peak measurement: displays the TSI
value at the location point set by the user.
• Segment TSI Time to peak measurement: measures the
time to peak velocity in specific wall segments and gets
automatically calculated TSI indexes based on these
measurements. The measurements may be presented in a
color coded Bull's eye diagram.
Alternatively, TSI time to peak measurement can be done
in Q Analysis by manually measuring the time between the
QRS marker and the peak velocity on the velocity trace.
Generic Time to peak measurement
1. Acquire a TSI apical loop.
2. Press
MEASURE.
3. In the Measurement menu, select Generic and Time to
peak (see Figure 7-6).
The TSI loop freezes at the TSI end frame.
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