GE Vivid E9

GE H EALTHCARE
D IRECTION GA091568, R EVISION 5 VIVID E9 S ERVICE M ANUAL
4 - 40 Section 4-3 - Functional checks
4-3-4 Color Mode Checks
4-3-4-1 Introduction
Color Flow screens are 2D or M Mode screens with colors representing blood or tissue movement.
Color Flow may be selected both from 2D mode or from M mode or a combination of these.
4-3-4-2 Preparations
1.) Connect one of the probes to the scanner’s left-most probe connector.
-See "Connecting Probes" on page 3-24 for info about connecting the probes.
2.) Turn ON the scanner.
The 2D Mode window is displayed (default mode).
4-3-4-3 Select Color 2D Mode
1.) From an optimized 2D image, press Color.
2.) Use the trackball (assigned function: Pos) to position the ROI frame over the area to be examined.
3.) Press Select. The instruction Size should be highlighted in the trackball status bar.
NOTE: If the trackball control Pointer is selected, press trackball to be able to select between Position
and Size controls.
4.) Use the trackball to adjust the dimension of the ROI.
4-3-4-4 Adjust the Color 2D Mode controls
• Adjust the Active mode gain to set the gain in the color flow area.
•Adjust Scale to the highest setting that provides adequate flow detection.
NOTE: The scale value may affect FPS, Low Velocity Reject, and Sample Volume.
•Adjust Low Velocity Reject to remove low velocity blood flow and tissue movement that reduces
image quality.
•Adjust Variance to detect flow disturbances.
•Adjust Sample volume (SV) to a low setting for better flow resolution, or a higher setting to more
easily locate disturbed flows
•Adjust Frequency to optimize the color flow display. Higher settings improve resolution. Lower
settings improve depth penetration and sensitivity. This does not affect the frequency used for 2D
and M-Mode.
NOTE: NOTE: Frequency setting may affect FPS, SV and Low Velocity Reject.
•Adjust Power to obtain an acceptable image using the lowest setting possible.
NOTE: The Power setting affects all other operating modes.