GE Voluson P6 Service Manual page 151

GE H RAFT
EALTHCARE
DIRECTION 5459672-100, R
Table 4-3
Step
CINE Mode
14
PERSIST.
15
LINE FILTER
16
CRI FILTER
17
DYNAMIC CONTROL
18
LINE DENSITY
19
ENHANCE
20
REJECT
21
GRAY MAP
22
4-10
6 DRAFT (J
EVISION
2D Mode Functions
Task
Section 4-4 - Functional Checks
17, 2013)
ANUARY
Expected Results
While scanning a certain number of frames (2D images of the last
examination sequence), this will be stored in the cine memory automatically.
This is indicated by the green bar in the bottom left corner:
When entering freeze mode, by pressing the [Freeze] key or the defined [Px]
key, the cine memory will be stored as a sequence. This sequence can be
reviewed in loop mode or image by image. After the cine clip is stored the
cine memory will be deleted.
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.
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.
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.
"Dynamic Control" allows you to enhance a part of interest of the grayscale
to make it easier to display pathology. You can select between twelve
different Dynamic control curves.
The dynamic control is displayed in the Image Info area on the screen.
Dynamic Control: 1 to 12
Control to improve the resolution by reducing the frame rate.
Respectively reducing the resolution by increasing the image frame rate.
high: higher resolution / lower frame rate
norm: normal resolution / medium frame rate
low: lower resolution / higher 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).
A gray map determines the displayed Brightness of an echo in relationship
to its amplitude.
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