GE Voluson 730Pro, Basic User Manual

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TD Mode
10.2.1 TD Box Position and TD Box Size
In 2D Imaging the relationship between 2D frame rate, line density, and field-of-view are well known
factors to be considered to obtain optimum 2D images.
Similar relationships exist in Color Imaging. On the TD Submenu the selection of the line density
adjusts the balance between the 2D-Line Density and the Tissue mode line density.
The available values are scan head-dependent.
The ability to change the TD Box size and position provides flexibility in TD Imaging.
The trackball changes the TD Box size and position.
Adjust the TD Box position on the 2D image with the trackball.
(in Single, Dual, or Quad Mode )
←→
TD Box horizontal position
↑↓
TD Box vertical position
The box is adjustable within the entire 2D image area.
The upper trackball key changes between TD Box position and TD Box size and vice
versa.
↑
decrease the vertical TD Box size
↓
increase the vertical TD Box size
→
increase the horizontal TD Box size
←
decrease the horizontal TD Box size
10.2.2 TD Gain Control
TD Gain must be adjusted properly to ensure that continuous flow is displayed, where appropriate.
TD Gain should be set as high as possible without displaying random Color speckle.
If you set the TD Gain control too low, the lack of sensitivity will make it difficult to detect small
abnormalities in flow and will possibly result in an underestimation of the large flow disturbances.
[
C Mode
]
key: adjusts the TD Gain.
When the GAIN control is turned clockwise the Color gets more intense.
When the GAIN control is turned counterclockwise the Color gets less intense.
Remarks:
*
Changing the gain is only possible in write mode!
Voluson
®
730Pro - Basic User Manual
10-4
105831 Rev. 0