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Imaging Mode
Other TVI Mode Controls
Table 7-30: Other TVI Mode Controls
Parameter
Gain
TGC
Depth
1/2/4
Alt
Using TVI Mode
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
Optimizing TVI Mode
Preset generally gives optimal performance with minimal adjustment. If
necessary, the following controls can be used to further optimize the TVI
Mode display:
Rev 1.00
Description
Adjusted by the knob below the TGC on the control panel.
When rotated clockwise, increases the overall gain applied
to the received echo signals equally for all depth.
Compensates for depth-related attenuation in an image.
The sliders nearest the operator affect the far field. TGC
amplifies returning signals to compensate for the attenua-
tion caused by tissue at increasing depths.
Adjusting the depth will influence diagram frame rate and
resolution. Decreasing the depth may allow for higher
frame rate and lower resolution. Increasing the depth will
increase image resolution and decrease frame rate.
Enables multiple image display windows in which two or
four images can be viewed simultaneously.
Display more Main menu controls.
While in Color Mode select TVI on the Main menu
Use the trackball to position the Color ROI over the area to be exam-
ined.
Rolling the trackball to adjust the position of the Color ROI.
To adjust the Color ROI size, press Set key on the control panel and
use the trackball.
To enlarge or narrow the Color ROI, roll the Trackball to the left or
right.
To lengthen or shorten the Color ROI, roll the Trackball up or down
Press Set key on the control panel when the desired size is obtained.
Reposition the Color ROI as needed.
Press Freeze key on the control panel to stop imaging.
To quit TVI Mode, please press CFM or 2D key on the control panel
or select TVI in the Main Menu.
Select Gain to adjust gain in the color flow area.
Set Scale to the highest setting that provides adequate flow detection.
Chapter 7 - System Operation
147
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