Optimizing Color Flow
LOGIQ 7 Online Help 5-75
Direction 2392536-100 Rev. 1
Wall Filter
Description Filters out low flow velocity signals in order to hide unusable
motion. It helps get rid of motion artifacts caused from breathing
and other patient motion.
Adjusting To raise/lower the wall filter, press PRF/Wall Filter until you
reach Wall Filter, then adjust Wall Filter left/right.
Values Values vary, depending upon probe, application, and packet
size. The wall filter is shown graphically on the color bar and is
displayed numerically on the monitor (cm/s).
Wall Filter values vary by probe and application and are
returned to factory or user preset value when you change:
Probe, Exam Category, Exam Calcs, or New Patient.
Benefits Gets rid of excess, unnecessary low frequency signals caused
by motion.
Scan Area
Description Scan Area sizes and positions the color window.
Adjusting The window grows from the center of the color flow window. To
adjust the size, press Scan Area (Size appears in the Trackball
Status area on the monitor display) then move the Trackball left/
right, up/down. To adjust the position, press Scan Area (Pos
appears in the Trackball Status area on the monitor display) then
move the Trackball to position the color window.
Values Sector and Convex Probes. Ranges from 20 degrees to 120
degrees in 1 degree to 2 degree increments.
Linear Probe. Ranges from 10% to full B-Mode image.
Benefits Increase the color window to see a larger area; decrease the
color window to improve frame rate.
Affect on other
controls
The smaller the color window, the faster the frame rate and vice
versa.
Bioeffects Sizing the color window may change the TI and/or MI. Observe
the output display for possible effects.
To Next Page
Loading...
Need help?
General
