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Appendix A
August 2018
bkSpecto Advanced User Guide
(16-01642-01)
Color mode (CFM)
Color-Flow Mapping (CFM). Real-time signal that represents the
speed of flowing material in each sample volume within the Color
mode image area. The Color mode signal is in principle
independent of the amount of flowing material. The Color mode is
normally superimposed on a 2D image that shows the anatomical
surroundings.
Flow directions towards and away from the transducer are
represented as different colors in Color mode (e.g. towards = red,
away = blue).
The Color mode signal (flow speed) is represented by different
values in the color mapping (relative measure) for each sample
volume in Color mode.
No color means either:
•
No flow in the sample volume (very low flow speed) or
•
Amount of reflection from flowing material (which might have
a high flow speed) is below threshold set by the Color mode
gain.
The Color mode signal (flow speed) is dependent on the angle of
the ultrasound beam relative to the flow direction.
color priority
When color information is superimposed on a 2D image, color can
appear outside vessels, making it appear that the flow is not
restricted to the vessel. To minimize this effect, you can adjust the
color priority. Make the color priority lower to have less color
outside the vessels.
NOTE:
High color priority gives color in more
areas; low color priority reduces the number of areas that are
colored.
combination mode
Simultaneous imaging in more than one mode, for example,
2D
+Color or 2D+Color+Doppler.
Compounding
Compounding is a result of combining images made at up to 5
different angles into one compound image. This reduces speckle
and optimizes the ultrasound image.
NOTE:
In certain cases
compounding can remove or suppress some image artifacts such
as shadowing (from e.g. kidney stones or cyst edges), which may
be used to identify certain characteristics of the imaged anatomy.
DecT
Flow Deceleration Time.
Term
Explanation
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