GE LOGIQ E9 User Manual page 89

Control
SRI-HD
CrossXBeam
Coded Harmonic
Imaging (CHI)
Frequency
Steer
Virtual Convex
TGC
Width
Tilt
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LOGIQ E9 User Guide
Direction 5454884-100 English Rev. 1
Table 2-1: B-Mode Controls (Continued)
Possible
Bioeffect
No SRI-HD (Speckle Reduction Imaging High Definition) 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 cange 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-HD level. SRI-HD 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.
No CrossXBeam is the process of combining three or more frames from
different steering angles into a single frame. CrossXBeam is
available on Convex and Linear probes.
CrossXBeam combines multiple co-planar images from different
view angles into a single image at real-time frame rates, using
bi-cubic interpolation.
Yes Harmonic imaging utilizes Digitally Encoded Ultrasound (DEU).
Coded Harmonics enhances near field resolution for improved small
parts imaging as well as far field penetration.
Yes Multi Frequency mode lets you downshift to the probe's next lower
frequency or shift up to a higher frequency.
Yes You can slant the B-Mode or Color Flow linear image left or right to
get more information without moving the probe. The angle steer
function only applies to linear probes.
Yes On Linear and Sector probes, Virtual Convex provides a larger field
of view in the far field. Virtual Convex is always active with Sector
probes.
No TGC amplifies returning signals to correct for the attenuation caused
by tissues at increasing depths. TGC slide pots are spaced
proportionately to the depth. The area each pot amplifies varies as
well. A TGC curve may appear on the display (if preset), matching
the controls that you have set (except during zoom). You can choose
to deactivate the TGC curve on the image.
Yes You can widen or narrow the size of the sector angle to maximize the
image's region of interest (ROI).
Yes You can steer the sector angle to get more information without
moving the probe while in B-Mode, M-Mode, Doppler Mode, and
Color Flow Mode. Tilt is not available on Linear probes.
Optimizing the Image
Description/
Benefit
2-3