GE H
EALTHCARE
DRAFT
V
OLUSON
E8 / V
OLUSON
E6
D
IRECTION
KTD102576, R
EVISION
7
DRAFT (A
UGUST
23, 2012)
S
ERVICE
M
ANUAL
Chapter 4 - Functional Checks
4-11
For further details refer to the Voluson E8 / Voluson E6 Basic User Manual.
23
FREQUENCY
resp.
HARM.FREQU.
To adjust the range of the receive frequency.
high resolution / lower penetration, mid resolution / mid penetration, or
lower resolution / high penetration
24
OTI
(Otimized Tissue Imaging)
OTI™ allows to “fine tune” the system for scanning different kinds of tissue.
25
GRAY MAP
A gray map determines the displayed Brightness of an echo in relationship
to its amplitude.
26
TINT MAP
A Tint map determines the Chroma value (color tone and saturation) of an
echo in relationship to its amplitude.
27
PERSIST.
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.
28
CRI FILTER
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.
29
LINE FILTER
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.
30
LINE DENSITY
Control to improve the resolution by reducing the frame rate.
Respectively reducing the resolution by increasing the image frame rate.
31
ENHANCE
Edge Enhance brings out subtle tissue differences and boundaries by
enhancing the gray scale differences corresponding to the edges of
structures.
32
REJECT
Selects a level below which echoes will not be amplified (an echo must have
a certain minimum amplitude before it will be processed).
Table 4-2
2D Mode Functions
Step
Task
Expected Results