LOGIQ 7/LOGIQ 7 Pro Quick Guide
Direction 5307393-100 Rev. 1
9
Color Flow/Doppler Image Optimize
Angle Correct
Estimates the flow velocity in a direction at an angle to
the Doppler vector by computing the angle between the
Doppler vector and the flow to be measured.
Angle Steer/Fine Angle Steer
Angle Steer slants the Color Flow region of interest or the
Doppler M line to obtain a better Doppler angle.
Press Angle Steer to access Fine Angle Steer. Fine Angle
Steer allows you to steer the Doppler cursor left/right 5,
10, 15 and 20 degrees. Available from the Doppler Mode
Touch Panel.
Baseline
Adjusts the baseline to accommodate faster or slower
blood flows to eliminate aliasing.
PRF/Wall Filter
Velocity scale determines pulse repetition frequency. If
the sample volume gate range exceeds single gate PRF
capability, the system automatically switches to high PRF
mode. Multiple gates appear, and HPRF is indicated on
the display.
Wall Filter insulates the Doppler signal from excessive
noise caused from vessel movement.
NOTE:
Push key to toggle between PRF and Wall Filter.
Threshold
Threshold assigns the gray scale level at which color
information stops.
Map
Allows a specific color map to be selected. After a
selection has been made, the color bar displays the
resultant map.
Invert
Allows blood flow to be viewed from a different
perspective, i.e. red away (negative velocities) and blue
toward (positive velocities). The real-time or frozen image
can be inverted.
Packet Size
Controls the number of samples gathered for a single
color flow vector
Accumulation
Enhances the flow in an image.
Modify Auto Calcs
Press to select desired Auto Calcs.
Trace Sensitivity
In Auto Calcs, increase to pick up more signal or
decrease to pick up less signal.
Trace Direction
Select Above, Below, or Both.
Auto Calcs
Specify Auto Calcs Off/Live/Frozen.
Quick Angle
Quickly adjusts the angle by 60 degrees.
Sample Volume Gate Length
Sizes the sample volume gate.
Trace Method
Specify Max, Mean, or Off.
Spatial Filter
Smooths out the color, makes it look less pixely.
Duplex
Duplex on: simultaneous B+CF+PW(CW) mode started in
triplex mode.; Duplex off: Toggle via live B+CF and
PW(CW) mode via B-Pause.
Map Compress
When you increase the value, high velocity elements in
the map are compressed so that the map darkens. When
you decrease the value, low velocity elements in the map
are compressed so that the map lightens. The effect is
visible in the color bar.
