GE Voluson Swift, Instructions For Use Manual

Page: 107 / 344

Figure 6-6 B-Flow: Scan Mode and Read Mode
Using B-Flow
1. Press
BF
on the user interface to start B-Flow Mode.
2. The B-Flow menu appears.
B-Flow Menu
Accumulation Accumulation enhances the flow in an image.
Background
Adjusts the level of the background anatomy.
Format XL Changes the monitor from standard mode to wide mode.
Cine #
Select the desired Cine #.
Gray Map
The
Gray Map determines the displayed brightness of an echo in relationship to its
amplitude. Depending on individual requirements a “harder” or “softer” image can
be obtained with this function and can be adjusted in freeze and in scan mode
(post-processing).
Tint Map
Displays the tint map selections on the monitor.
Persist.
Persistence is a frame averaging function that allows elimination of image speckle
from 2D images. With a higher persistence setting more frames are averaged.
Enhance
With the
Enhance function the echo information is digitally processed such that
certain existing information becomes easily visible for the eye (e.g., adjacent media
layers). Due to the
Enhance function a finer, sharper impression of the image is
produced.
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.
Line Dens.
Line Density optimizes B-Mode frame rate or spatial resolution for the best possible
image. It allows to make a trade-off between image resolution and frame rate.
S/PRI
Sensitivity Pulsed Repetition Index; a higher value improves the B-Flow image
Cine Menu
For more information see
'Cine Mode'
on page 7-12.
2D Mode
Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 Revision 4
6-13