GE Vivid i, User Manual

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Scanning Modes
80
Vivid i User’s Manual
2378958-100 Rev. 02
Color maps
Displays a color map menu to optimize the greyscale
presentation. The menu enables an option from a list of
non-linear gray-curves or different 2D-colorized curves to be
selected. Use the
trackball to highlight a color map and press
SET
to activate the desired map.
Cineloop (in Freeze only)
Allocates different cineloop control functions to the assignable
soft keys.
Gain
When rotated clockwise, increases the overall gain applied to
the received echo signals equally for all depth.
Time Gain Compensation (TGC)
Compensates for depth-related attenuation in an image. The
sliders nearest the operator affect the far field. TGC amplifies
returning signals to correct for the attenuation caused by tissue
at increasing depths.
Depth
Sets the maximum (far field) distance that will be imaged.
Decreasing the depth may allow higher frame rates.
2D Soft menu controls
Compress
Controls the amount of contrast in the 2D image. An index
number is displayed in the status window to indicate the
relative level of compression.
Reject
Adjust reject level. When this control is increased, low-level
echoes are rejected and appear darker in the 2D image. An
index number is displayed in the status window to indicate the
relative level of rejection.