CFM Mode
8.2.1
CFM Box Position and CFM 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 CFM Submenu the selection of the line density
adjusts the balance between the 2D Line Density and the Color mode line density.
The values available are scan head-dependent.
The ability to change the CFM box size and position provides flexibility in CFM imaging.
The trackball changes the CFM box size and position.
Adjust the CFM box position on the 2D image with the trackball (in Single, Dual, or Quad mode )
←→
CFM box horizontal position
↑ ↓
CFM box vertical position
The box is adjustable within the entire 2D image area.
The upper trackball key changes between CFM box position and CFM box size and
vice versa.
↑
decrease the vertical CFM box size
↓
increase the vertical CFM box size
→
increase the horizontal CFM box size
←
decrease the horizontal CFM box size
8.2.2
CFM Gain Control
CFM Gain must be adjusted properly to ensure that continuous flow is displayed, where appropriate.
CFM Gain should be set as high as possible without displaying random Color speckle.
If you set the CFM 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
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
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