Cine # Displayed frame #
XL
Changes to wide format.
6.3.4 Elastography
Elastography shows the spatial distribution of tissue elasticity properties in a region of interest
by estimating the strain before and after tissue distortion caused by external or internal
forces.The strain estimation is filtered and scaled to provide a smooth presentation when
displayed.
Caution
The results achieved in Elastography Mode always depend on the accuracy of the procedure
performed. Any clinically relevant decisions need to be verified with other state of the art
methods.
Figure 6-11 Elastography: scan- and read mode
Using Elastography
1.
Press Elasto on the user interface.
2. Perform the scan. Proper manual compression/decompression is indicated by a fully
green quality bar.
3. Press Freeze.
Elasto Menu
SRI
Speckle Reduction Imaging ( SRI ) is an adaptive algorithm to reduce the unwanted
effects of speckle in the ultrasound image. Image speckle usually appears as a
grainy texture in otherwise uniform areas of tissue. Its appearance is related to
image system characteristics, rather than tissue characteristics, so that changes in
system settings, such as probe type, frequency, depth, and others, can change the
appearance of the speckle. Too much speckle can impair image quality and make it
difficult to see the desired detail in the image. Likewise, too much filtering of speckle
can mask or obscure desired image detail. Extra care must be taken to select the
optimal SRI level. SRI is available in B-Mode imaging and may be used with any
transducer or clinical application when image speckle appears to interfere with the
desired image detail.
Soft Compress.
Plus/minus control, range: 0-9 (step size: 1)
Hard Compress.
Plus/minus control, range: 0-9 (step size: 1)
2D + 2D/Elasto
Displays a 2D and a 2D/Elasto image side by side.
2D Mode
6-20
Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 R
evision 4
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