GE Voluson E8 Service Manual page 147

GE H DRAFT
EALTHCARE
D KTD102576, R
IRECTION
Table 4-2
Step
FREQUENCY resp.
23
HARM.FREQU.
OTI (Otimized Tissue Imaging)
24
25
GRAY MAP
26
TINT MAP
27
PERSIST.
28
CRI FILTER
29
LINE FILTER
30
LINE DENSITY
31
ENHANCE
32
REJECT
For further details refer to the Voluson E8 / Voluson E6 Basic User Manual.
7 DRAFT (A
EVISION
2D Mode Functions
Task
Chapter 4 - Functional Checks
23, 2012)
UGUST
Expected Results
To adjust the range of the receive frequency.
high resolution / lower penetration, mid resolution / mid penetration, or
lower resolution / high penetration
OTI™ allows to "fine tune" the system for scanning different kinds of tissue.
A gray map determines the displayed Brightness of an echo in relationship
to its amplitude.
A Tint map determines the Chroma value (color tone and saturation) of an
echo in relationship to its amplitude.
Persistence is a temporal filter that averages frames together.
This has the effect of presenting a smoother, softer image.
This function is only available if XBEAM CRI is switched off.
If this filter is set to "high", the XBeam CRI-image is smoothed.
CRI Filter setting "off" leads to a sharper impression of the XBeam CRI-
image. This function is only available if XBEAM CRI is switched on.
The signals of the neighboring pulses are less weighted for the display of the
actual pulse which considerably improves the detail lateral resolution and
signal-to-noise ratio.
This function is only available if XBEAM CRI is switched off.
Control to improve the resolution by reducing the frame rate.
Respectively reducing the resolution by increasing the image frame rate.
Edge Enhance brings out subtle tissue differences and boundaries by
enhancing the gray scale differences corresponding to the edges of
structures.
Selects a level below which echoes will not be amplified (an echo must have
a certain minimum amplitude before it will be processed).
V E8 / V
OLUSON OLUSON
S M
ERVICE ANUAL
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E6