GE Vivid i, User Manual

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Scanning Modes
Vivid i User’s Manual
85
2378958-100 Rev. 02
M-Mode Soft menu controls
Compress
Controls the amount of contrast in the 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 image. An index
number is displayed in the status window to indicate the
relative level of rejection.
Power
When power is re-
duced, it reduces
the signal-to-noise
ratio, so that the im-
age, spectrum or
color scan may be-
come noisier.
Controls the amount of acoustic power applied in all modes.
When power is set to maximum, it is equal to or less than the
maximum acoustic power permitted by the FDA. The Thermal
Index (TI) and the Mechanical Index (MI) are displayed on the
screen.
Dynamic Range
Enables control of the dynamic range or contrast of the image.
When dynamic range is set to High, the image is softer and
more low-level data is visible.
Using M-Mode
Conventional M-Mode (greyscale)
1. While in 2D-Mode press cursor on the control panel.
2. Use the trackball to position the cursor over the required
area of the image.
Gain, Frequency,
Focus, Dynamic
Range and Com-
pression affect also
the 2D image.
3. Press
MM
- the M-mode sweep will start to sweep.
4. Press
FREEZE
to stop imaging.
OR
Gain, Frequency,
Focus, Dynamic
Range and Com-
pression affect also
the 2D image.
1. While in 2D-Mode press
MM
on the control panel. The
M-mode sweep will start to sweep.
2. Use the trackball to position the cursor over the required
area of the image.