GE Vivid S5, Руководство пользователя

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Measurement and Analysis
Vivid S5/Vivid S6 User Manual
265
R2424458-100 Rev. 2
Measurements on protocol images
When performing measurements on images acquired in a
protocol, the measurement results will be associated with the
protocol level of the image. Average values will be calculated
for each protocol level.
For example you may measure LVOT Diam for images
acquired outside protocol and for images on each level of an
Exercise 2x4 protocol, leading to the following results in
worksheet:
Event timing measurements
Event timing enables the time measurement for opening and
closure of the Aorta 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 on both modes. In addition event timing
can be done on curved anatomical M-Mode traces in
Q Analysis. The measurements are shown as dashed lines in
the Analysis window and Anatomical M-Mode window in
Q Analysis.
1.
Generate the spectrum 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 .
Parameter Value Method M1 M2
LVOT Diam 1.0 cm Avg. 1.1 0.9
LVOT Diam, Rest 1.1 cm Avg. 1.0 1.2
LVOT Diam, Peak 1.2 cm Avg. 1.2
CAUTION
Measurement results associated with a stress level will not be
updated if the image is moved to another stress level at a later
time. Images should be correctly placed in the protocol when
performing measurements.