Measurement and Analysis
268 Vivid S5/Vivid S6 User Manual
R2424458-100 Rev. 2
4. Perform a measurement for all basal and mid-level
segments in all three apical views.
In addition to the Time to peak and the Peak velocity for
each segment, the following TSI indexes are calculated:
• Septal lateral delay: difference in Time to peak velocity
in the basal lateral wall and basal septum.
• Septal posterior delay: difference in Time to peak
velocity in the basal posterior wall and the basal
antero-septum.
• Basal max delay: difference between the maximum and
minimum time to peak measurements in the six basal
segments. Requires at least four of the six basal
segment measurements.
• Basal standard deviation: the standard deviation of the
time to peak measurements in the six basal segments.
Requires at least four of the six basal segment
measurements.
• All segments max delay: difference between the
maximum and minimum time to peak measurements in
all the measured basal and mid level segments.
Requires at least eight of the twelve segmental
measurements.
• All segments standard deviation: the standard deviation
of the time to peak measurements in all measured basal
and mid level segments. Requires at least eight of the
twelve segmental measurements.
The TSI indexes indicate degrees of asynchrony in time to
peak velocity
5. Select TSI Bull’s eye report in the Measurement menu.
The measurements are displayed in a color coded bull’s
eye diagram together with a list of the calculated TSI
indexes.
To Next Page
Loading...
