GE Voluson E8 Service Manual page 153

GE H DRAFT
EALTHCARE
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IRECTION
4-4-5 Color Doppler Mode Checks
NOTE: Different menus are displayed depending on which Color Doppler Mode (CFM, PD, HD-FLow or TD) is
selected.
After pressing the PD key on the control panel, the HD-FLOW key (to activate the Bi-Directional Angio
NOTE:
Mode) can be seen.
Table 4-5
Step
Color Box Position and
1
Color Box Size
CFM Gain
PD Gain
2
HD-Flow Gain
TD Gain
3
STEERING
2D+2D/C (PD, HD-Flow
4
or TD)
5
INVERT
6 ZOOM
7 QUALITY
WMF (Wall Motion Filter)
8
PRF
9
THRESHOLD
10
11
DISPL. MODE
7 DRAFT (A
EVISION
Figure 4-15 CFM Main and CFM Sub Menu
Color Doppler Mode (CFM, PD, HD-Flow, TD) Functions
Task
Adjust the Box- Position resp. Size with the TRACKBALL in the 2DSingle image.
The upper trackball key changes from Box position to Box size.
Rotate the C MODE key to ensure that continuous flow is displayed, where appropriate.
Rotate the PD MODE key to adjust the Power Doppler Gain
Rotate the PD MODE key to adjust the Bi-Directional Angio Gain
Rotate the C MODE key to adjust the Tissue Doppler Gain.
Beam Steering is only possible with linear probes in CFM, PD and HD-Flow Mode.
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 color information.
The color of the color wedge inverts around the baseline. (impossible in PD Mode)
Image magnification (PAN-Zoom) in read- and write mode.
Improves the Color Resolution by reducing the image frame rate, respectively vice versa.
Used to eliminate Doppler "noise" that is caused by vessel wall or cardiac wall motion.
(CFM,PD, HD-Flow)
By touching toward up the PRF increases. By touching toward the PRF decreases.
After FREEZE you can adjust the Color Threshold. It eliminates small color noise or motion
artifact signals in the color image. (small number cuts off less signals than a higher setting)
To select the CFM- Display Mode (V; V-T; V-Pow; Pow-T; or T).
Chapter 4 - Functional Checks
23, 2012)
UGUST
Expected Results
V E8 / V
OLUSON OLUSON
S M
ERVICE ANUAL
4-17
E6