GE Vivid S5 - Using Strain; Optimizing Strain

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