Measurement and Analysis
272 Vivid S5/Vivid S6 User Manual
R2424458-100 Rev. 2
CAUTION
The Time to peak measurement in Q Analysis may differ from the
Generic and Segment Time to peak measurements due to the
following considerations:
• The Generic and Segment Time to peak measurements find the
maximum velocity only within the TSI search interval. If the
desired peak on the velocity trace is outside the TSI search
interval, the Generic and Segment Time to peak measurements
will return a different result than the manual Time to peak
measurement.
• If the maximum velocity is at one of the ends of the TSI search
interval, the Generic and Segment time to peak measurements
return the time of the end of the TSI search interval. In some
cases the falling flank of an iso-volumic contraction peak at the
time of TSI Start or the rising flank of a post-systolic
contraction peak at the time of TSI End may be detected. In a
manual measurement the time to a peak within the TSI search
interval with a lower velocity than the velocity at the end of the
interval may be measured instead.
• If there are two or more peaks of comparable velocity within the
TSI search interval, or a poor signal quality, the Generic and
Segment Time to peak measurements may return the time to a
different peak than what a manual method would do. Typically
in these situations, the TSI image will show a wide range of
colors over a small spatial region.
To Next Page
Loading...
Need help?
General
