GE Vivid 7 Service Manual

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 4 - Functional Checks 4 - 47
4-3-8-7 Check Sample Volume and Tissue Priority
 
Table 4-16    Color Flow Mode: Check Variance, Color Maps and Cineloop
StepTask Expected Result(s)
9. Adjust Variance Controls the amount of variance data added to a color 
display. 
Variance enables computer-aided detection of non-
luminary flow (e.g. jets or regurgitation). 
Variance is available in live and cine replay.
10. Select Color Maps...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
4 - 48 Section 4-3 - Functional Checks
4-3-8-8 Check Frequency, Radial Av eraging, Lateral Averaging, Power
   
4-3-8-9 Adjust ROI
 
Table 4-17    Color-Mode Soft Menu Controls Check
StepTaskExpected Result(s)
1. Adjust Frequency
Enables the adjustment of the transmission frequency to 
control the sensitivity or the level of penetration. 
The selected frequency is displayed in the status 
window.
Adjusting Frequency may affect...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 4 - Functional Checks 4 - 49
4-3-9 Doppler Mode Checks
4-3-9-1 Introduction Doppler is used to measure velocity (most often in blood).
Doppler mode can be done with a special pencil probe  or with an ordinary probe. By using an ordinary 
probe, you can first bring up a 2D picture  for navigation purpose and then add Doppler.
4-3-9-2 Preparations Use a phantom when doing these tests.
1.) Connect one of the probes, to the...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
4 - 50 Section 4-3 - Functional Checks
4-3-9-2      Preparations (cont’d) Figure 4-32   Doppler Mode Controls
Gain * Mode Dependant Keys
Horizontal Sweep 
*
Velocity Range
Baseline  *
LVR
Invert  *
LPRF (in PW mode only)
Color Maps  *
Soft menu
Sample Vol. (PW)
Compress *
Reject  *
Frequency
Frame Rate
Angle Corr.  *
Power
CW
Freeze
PW
Zoom
Display zoom
HR zoom
Controls marked with * (asterisk) are  also available in freeze and...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 4 - Functional Checks 4 - 51
4-3-9-3 Check Horizontal Sweep, Velocity  Range, Baseline and Low Velocity Reject 
 
Table 4-19    Doppler Mode Controls Checks
StepTaskExpected Result(s)
1. Adjust HORIZONTAL SWEEP
Adjusts the horizontal refresh rate of the Doppler area 
of the display. 
Horizontal sweep is available in live and cine replay.
2. Adjust VELOCITY RANGE
Enables the vertical scale  of the Doppler spectrum and 
the...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
4 - 52 Section 4-3 - Functional Checks
4-3-9-4 Check Invert, LPRF (in PW only) and Color Maps
  
Table 4-20    Doppler Mode Controls Checks
StepTaskExpected Result(s)
5. Press  INVERT 
Enables the Doppler spectrum to be flipped 180 
degrees, so that negative velocities are displayed 
above the baseline and positiv e velocities below the 
baseline. 
Invert is available in live and cine replay.
6. Press  LPRF
 
In PW, adjusts the...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 4 - Functional Checks 4 - 53
4-3-9-5 Check Sample Volume, Co mpress, Reject and Frequency
  
Table 4-21    PW/CW Doppler Mode: Check Sample Volume, Compress, Reject and Frequency
StepTask Expected Result(s)
1. Adjust SAMPLE VOLUME (SV)
  In PW mode, set the longitudinal size of the region to 
be sampled for measurement. 
Adjusting Sample volume may affect the PRF (Nyquist 
limit) settings. 
SV does not apply to CW mode,...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
4 - 54 Section 4-3 - Functional Checks
4-3-9-6 Check Frame Rate, Angle Correction and Power
 
Table 4-22    PW/CW Doppler Mode: Che ck Frame Rate, Angle Correction and Power
StepTask Expected Result(s)
1. Adjust FRAME RATE 
Adjusts frame rate.
The relative setting of the frame rate is displayed in the 
status window (under 2D).
2. Adjust  ANGLE CORRECTION
 
Enables correction of the  Doppler velocity scale by 
defining the angle...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 4 - Functional Checks 4 - 55
4-3-10 4D Volume Rendering Test
Do a 4D functional check. The  4D and Multi-plane Imaging manual  explains how to use the 4D 
function. The manual is include d on the Vivid 7 Manual CD.
Follow these steps to test the basic 4D functionality:
1.) Select the 3V probe.
2.) Create an examination.
3.) Press  4D on the Operator Panel. The 4D Volu me Rendering screen is displayed.
4.) Adjust the  Width...

GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
4 - 56 Section 4-3 - Functional Checks
4-3-10 4D Volume Rendering Test (cont’d)
5.) Using the trackball rotate and translate the volume rendering to display the structure of interest as  described in the section below. Press  Angle to get a pre-defined orientation before translating and/
or rotating the volume rendering. If necessary, press  Clear to reset the orient ation to the default 
position.
6.) Optimize the volume rendering...