Scanning Modes
180 Vivid S5/Vivid S6 User Manual
R2424458-100 Rev. 2
• Strain rate (see page 178)
• Strain (see page 183)
Strain rate Soft menu controls
Strain length
Determines the strain sample volume size. There is a trade-off
between noise and spatial resolution controlled by the Strain
length. To minimize noise the Strain length should be
maximized. A value of 12mm is typical for adult cardiac patients
(see "Optimizing Strain rate" on page 181).
SRI Reject
Adjust the cut-off level of the low Strain rate to be discarded
when generating the color image. Rejected values are
displayed in green.
Compress
Controls the amount of color compression. The color bar is
adjusted accordingly.
Transparency
Control the degree of transparency of the strain rate color.
Threshold
Controls the level of greyscale intensity that is used as
threshold for color.
Frequency
Enables the adjustment of the transmission frequency to
control the sensitivity or the level of penetration.
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.
To Next Page
Loading...
