Scanning Modes
186
Vivid S5/Vivid S6 User Manual
R2424458-100 Rev. 2
Lateral Averaging
Smooths the image by averaging collected data along the
same horizontal line. An increase of the lateral averaging will
reduce noise, but this will also reduce the lateral resolution.
Use Averaging con-
trols with caution
so as not to obscure
significant diagnos-
tic information.
Radial Averaging
Smooths the image by averaging collected data along the
same radial line. An increase of the radial averaging will reduce
noise, but this will also reduce the radial resolution.
Power
Controls the amount of acoustic power applied. When power is
reduced the signal to noise ratio is reduced, so that the image
may become noisier.
Cine Compound (Freeze only)
Calculates and displays cineloops generated from a temporal
averaging of multiple consecutive heart cycles. The number of
cycles averaged is controlled from the Soft menu rocker. The
number of averaged cycles displayed on the top left corner.
Using Strain
1.
From TVI Mode, press
ALT
on the control panel and press
STRAIN
.
2.
Adjust
STRAIN START
close to the R-peak.
3.
Adjust
STRAIN END
near the T-wave.
4.
Use the
trackball
to position the ROI frame over the area
to be examined.
The assignable con-
trols of the trackball
are displayed in the
trackball status bar
in the bottom right
corner of the screen.
5.
Press
SET
. The instruction
Size
should be highlighted in the
trackball status bar. If not, press
SET
again to select
Size
.
Note
: If the trackball control
Pointer
is selected, press
TRACKBALL
to be able to select between
Position
and
Size
controls.
6.
Use the
trackball
to adjust the dimensions of the ROI.
Optimizing Strain
•
From an optimized Strain rate display adjust strain tracking
to pick out the systolic phase.
•
The main use of Strain is to map negative systolic
deformation. This means that
STRAIN START
and
STRAIN
END
should be adjusted to pick out the systolic phase of the
Содержание Vivid S5
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Страница 30: ...Introduction 12 Vivid S5 Vivid S6 User Manual R2424458 100 Rev 2 ...
Страница 154: ...Basic scanning operations 136 Vivid S5 Vivid S6 User Manual R2424458 100 Rev 2 ...
Страница 250: ...Stress Echo 232 Vivid S5 Vivid S6 User Manual R2424458 100 Rev 2 ...
Страница 260: ...Contrast Imaging 242 Vivid S5 Vivid S6 User Manual R2424458 100 Rev 2 ...
Страница 420: ...Quantitative Analysis 402 Vivid S5 Vivid S6 User Manual R2424458 100 Rev 2 ...
Страница 508: ...Archiving 490 Vivid S5 Vivid S6 User Manual R2424458 100 Rev 2 ...
Страница 600: ...Peripherals 582 Vivid S5 Vivid S6 User Manual R2424458 100 Rev 2 ...
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