6 Image Acquisition
Operator’s Manual 6 - 7
The higher the sensitivity is, the more sensitive indication for low-velocity flow becomes.
Flow State
Refers to optimizing the various flow states.
Persistence
This function is to adjust the temporal smooth to optimize the image.
Smooth
This feature is used to reject the noise and smooth the image.
Scale
This function is used to adjust the speed range of color flow, which is adjusted through PRF in the
system. The real-time PRF value is displayed in the image parameter area.
Aliasing may occur if low velocity scale is used and high velocities are encountered.
Low velocities may not be identified when a high velocity scale is used.
Baseline
Refers to the area where the velocity is zero in the scale. Adjust according to the actual situation so
as to get an optimum flow display.
Invert
To set the display mode of the color flow. The color scale will be inverted when the function is
turned on.
Auto Invert
To set the display mode of the color flow. The color bar can automatically invert when the color
flow is steered to a certain angle to accommodate operators’ habit of distinguishing flow direction.
Color Map
This function is a combination of several image parameters, which indicates the display effect of
color image.
WF (Wall Filter)
It filters out low-velocity signals to provide effective information, and this function is used to adjust
the filtered frequency. The real-time value (WF) is displayed in the image parameter area.
Priority
This function is used to set levels of the flow display, to display the grayscale signal or color signal.
The color image is preferred with higher value; while grayscale signals are displayed with the lower
value.
iTouch
To optimize image parameters as per the current tissue characteristics for a better image effect.
Smart Track
To optimize image parameters as per the current tissue characteristics for a better image effect.
When Smart Track is turned on, the system optimizes ROI angle and position automatically to
achieve an active tracking by reducing the impact of patient respiratory movement.
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