GE Vivid P3, Руководство по обслуживанию

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GE H
EALTHCARE
PROPRIETARY TO GE
D
IRECTION
5344303-100, R
EVISION
3 V
IVID
P3 S
ERVICE
M
ANUAL
4-18 Section 4-3 - General Procedure
4-3-8-3 Color Flow Mode Softemenu Key
Table 4-8 Color Flow Mode Softmenu Key
Step Task Expected Result(s)
1
Threshold
Threshold assigns the gray scale level at which color
information stops.
2
Packet Size
Controls the number of samples gathered for a single
color flow vector.
3
Select Color maps
Allows a specific color map to be selected. After a
selection has been made, the color bar displays the
resultant map.
4
Adjust Frequency
Enables the adjustment of the probe’s operating
frequency. Press Frequency and select desired
value. The selected frequency is displayed in the
status window.
5
Set Frame Average
Averages color frames. Press Frame Average up/
down to smooth temporal averaging.
6
Color Invert
Views blood flow from a different perspective. Press
Invert to reverse the color map.
7
Adjust Line Density
Trades frame rate for sensitivity and spatial
resolution. If the frame rate is too slow, reduce the
size of the region of interest, select a different line
density setting, or reduce the packet size.
8
Adjust Dynamic Range
Dynamic Range controls how echo intensities are
converted to shades of gray, thereby increasing the
adjustable range of contrast.
9
Activate ACE
Eliminates the motion artifacts. Press Ace to
activate.
10
Adjust Angle Steer
Slants the Color Flow region of interest or the
Doppler line to obtain a better Doppler angle.
11
Move Baseline
Adjusts the baseline to accommodate faster or
slower blood flows to eliminate aliasing.
12
Change PRF
(Pulse Repetition Frequency)
Velocity scale determines pulse repetition frequency.
If the sample volume gate range exceeds single gate
PRF capability, the system automatically switches to
high PRF mode. Multiple gates appear, and HPRF is
indicated on the display.
13
Transparency Map Allows to select specific transparency map
14
Focus Position
Increases the number of transmit focal zones or
moves the focal zone(s) 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.
15
Power output
Optimizes image quality and allows user to reduce
beam intensity. 10% increments between 0-100%.
Values greater than 0.1 are displayed.
16
Wall Filter
Wall Filter insulates the Doppler signal from
excessive noise caused from vessel movement.
17
Angio
To enter PDI (Power Doppler Imaging) Mode press
CF and select “Anglo” on primary menu.