Mindray DC-80A, Руководство оператора

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Image Optimization 5-23
Smooth
To change the trace area, adjust through [Trace Smooth] item or the mapping-menu
item on the touch screen.
There are 4 levels of smooth effect provided, the bigger the value, the higher the
smooth processing.
Trace
Sensitivity
This function is used to set the sensitivity of tracing in the spectrum.
To change the trace area, adjust through [Trace Sensitivity] item or the mapping-menu
item on the touch screen.
There are 5 levels of sensitivity adjustment, the bigger the value the higher the
sensitivity.
Operations In real-time scanning, the results displayed are derived from the calculation of the
latest cardiac cycle.
In the freeze and cine status, the results displayed are calculated from the current
selected area.
Invert
Description
This function is used to set how the spectrum is displayed.
Operations Turn the function on or off using the [Invert] item or the mapping-menu item on the
touch screen.
Select “Auto Invert” in the “[Setup] (F10)
→
[System]
→
[Image]”, so the spectrum can
automatically invert when the color flow is steered to a certain angle to accommodate
the operator’s desire to distinguish the flow direction.
Speed
Description
This function is used to set the scanning speed of PW mode imaging.
Operations Adjust using the [Speed] item or the mapping-menu item on the touch screen.
There are 6 levels of scan speed available: the smaller the value the faster the speed.
Effects Changing the speed makes it easier to identify the cardiac cycles and to detect more
details.
T/F Res.
Description This function is used to create a balance between time resolution and spatial
resolution.
Operations
Adjust using the [T/F Res] item or the mapping-menu item on the touch screen.
There are 4 levels of T/F Res. values available.
Wall Filter
Description It filters out low-velocity signals to provide effective information, and this function is
used to adjust the filtered frequency. The real-time value is displayed in the image
parameter area in the top-right corner of the screen.
Operations Select using the [WF] item or the mapping-menu item on the touch screen.
Impacts
Signals of low-velocity flow may be missing.