GE Vivid S70, Руководство пользователя

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Advanced cardiac measurements and analysis
Vivid S70 / S60
–
User Manual
8-11
BC092760-1EN 01
Advanced cardiac measurements
and analysis
Event timing measurements
Event timing enables the time measurement for opening and
closure of the Aortic and Mitral valves, as referred to the
automatically detected QRS marker, which normally is on the
rising slope of the R-wave.
Event timing can be performed on a Doppler spectrum or an
M-Mode acquisition showing the corresponding valves. The
procedure is similar in both modes. In addition event timing can
be done on traces in Q Analysis. The measurements are shown
as dashed lines in the
Analysis
window and
Anatomical M-Mode
window in Q Analysis.
The measurements can be used as default start and end times
for TSI.
1. Generate the spectrum or M-Mode image to be measured.
2. Press
Freeze to stop the cineloop.
3. Press Measure on the Control Panel.
4. Select Event Timing in the
Measurement
menu.
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. Place the cursor to the corresponding point on the spectrum
for the selected measurement.
6. Press Select 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