GE Vivid S70 User Manual page 364

Measurements and Analysis
1. Auto/Manual measurement
2. Cardiac cycle indicators
3. Calipers
CAUTION
8-86
During cardiac cycle detection, the system identifies the cardiac
cycle using calipers, vertical bars, and/or highlighting of timeline
data. Use of identifiers is based on measurements and
calculations selected by an operator for the current application.
The system may place calipers at early systolic peak, peak
systole, minimum diastole and end diastole. For Venous flow,
calipers are placed at peak values. Vertical bars may also be
placed to indicate the beginning and end of the cardiac cycle.
The peak and/or mean trace may be highlighted. You can edit
the cardiac cycle identified by the system or select a different
cardiac cycle.
Use the Modify Calculation sheet to select the calculations to be
displayed in the M&A Result window. These calculations are
displayed at the top of the M&A Result window located adjacent
to the image. The calculations are presettable by application,
which means you can set up the default calculations to be
displayed for each application. See 'The Modify calculations
sheet' on page 12-32 for more information.
The automated vascular doppler measurements use computer
algorithms for envelope detection and recognition of points of
interest. There is an inherent risk that these algorithms may
sometimes give suboptimal or incorrect results. Verify the
correctness of the displayed points and traces before
approving them.
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Vivid S70 / S60 User Manual
BC092760-1EN 01