GE Voluson E8 Service Manual page 146

GE H RAFT
EALTHCARE
D KTD102576, R
IRECTION
Table 4-2
Step
Harmonic Imaging
7
Elastography
8
HR Zoom &
9
Image Magnification
10
FFC (Focus and Frequency Composite)
XBEAM CRI (CrossBeam
11
Compound Resolution Imaging)
12
CE (Coded Excitation)
13
SRI (Speckle Reduction Imaging)
14
2D+2D/SRI
15
2D+2D/SRI CRI
16
WIDE SECTOR
17
TRAPEZ
18
Image Orientation
19 ANGLE
ß-VIEW
20
DYN
21
FOC. ZONES
22
4-10
7 DRAFT (A
EVISION
2D Mode Functions
Task
Section 4-4 - Functional Checks
23, 2012)
UGUST
Expected Results
Press the HI key on the control panel to switch on/off the Coded Harmonic
Imaging function in 2D Mode provided the active probe allows this function.
Press the ELASTO key on the control panel to switch on/off the
Elastography function in 2D Mode provided the active probe allows this
function.
HR Zoom
Image magnification of selected image area.
push/dial Toggle control
Image Magnification:
Image Magnification of complete image in read and write mode.
FFC combines a low frequency to increase the penetration and higher
frequency to keep a high resolution.
It reduces speckle and artifacts in the 2D image.
Pulses are transmitted not only perpendicularly to the acoustic window, but
also in oblique directions. The advantages of XBeam CRI are enhanced
contrast resolution with better tissue differentiation and clear organ borders.
Coded Excitation improves image resolution and penetration in the far field.
This allows to use a higher frequency on technically difficult patients.
Speckle Reduction Imaging is a smoothing type filter to reduce speckle in the
ultrasound image.
Changes the Single image display to two simultaneous half images. The left
frame shows only the 2D Mode image. The right frame shows the 2D Mode
image with SRI information.
Changes the Single image display to two simultaneous half images. The left
frame shows only the 2D Mode image. The right frame shows the 2D Mode
image with SRI and XBEAM CRI information.
Extends the field of view of curved array probes by means of beam steering.
Advantage of the Trapezoid Mode (button is highlighted):
The scan area is very increased in relation to the linear display by steering
the ultrasound lines in the border of the probe.
Use the LEFT/RIGHT respectively the UP/DOWN keys on the Touch Panel
to alternate the image orientation.
Use this control to select a part of interest of the 2D image. The advantage
of the decreased field-of-view is an increased 2D frame rate due to the
smaller sector width.
This function allows the adjustment of the Volume O-Axis position of 3D
probes in 2D Mode. The green line in the displayed symbol indicates the
position of the acoustic block.
Dynamic Range controls how echo intensities are converted to shades of
gray, thereby increasing the adjustable range of contrast.
Increases the number of transmit focal zone, so that you can tighten up the
beam for a specific area.
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OLUSON OLUSON
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ERVICE ANUAL
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