GE LOGIQ F Series, Базовое руководство по обслуживанию

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GE LOGIQ F S
ERIES
D
IRECTION
5446617-100, R
EVISION
10 B
ASIC
S
ERVICE
M
ANUAL
4 - 12 Section 4-3 - General Procedure
4-3-6-2 B Mode OP Panel Controls
Table 4-2 B Mode Controls
Control Possible Bioeffect
Description/Benefit
Depth Yes Depth controls the distance over which the B-Mode
images anatomy. To visualize deeper structures, increase
the depth. If there is a large part of the display which is
unused at the bottom, decrease the depth.
Gain No B-Mode Gain increases or decreases the amount of echo
information displayed in an image. It may have the effect
of brightening or darkening the image if sufficient echo
information is generated.
Focus Yes Increases the number of focal zones, moves the focal
zone(s) and change the zone width so that you can tighten
up the beam for a specific area. A graphic caret
corresponding to the focal zone position(s) appears on the
right edge of the image.
Auto Optimize No Auto Optimize (Auto) lets you optimize the image based
upon a the actual B Mode image data (Auto Tissue
Optimize, ATO). The preset levels (Low, Medium, and
High) allow you to pick a preference for the contrast
enhancement in the resulting image. Low does the least
amount of contrast enhancement, high does the most.
Auto is available in single or multi image, on live, frozen or
CINE images (in B-Mode only), and while in zoom and in
Spectral Doppler.
Auto in PW Doppler Mode(ASO) optimizes the spectral
data. Auto adjusts the Velocity Scale/PRF (live imaging
only), baseline shift, dynamic range, and invert (if preset).
Upon deactivation, the spectrum is still optimized.
Mode Cursor No Displays the M/D-Mode cursor on the B-Mode image.
CrossXBeam Yes 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.
Tissue Harmonic
Imaging (THI) Yes Enhances image resolution and improved small parts
imaging.
Frequency Yes Multi Frequency mode lets you downshift to the probe's
next lower frequency or shift up to a higher frequency.
Steer 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.
Virtual Convex Yes On Linear and Sector probes, Virtual Convex provides a
larger field of view in the far field.
TGC 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.