User's Manual

Using Vscan Air CL
5-22
Vscan Air
–
User Manual
Direction GP092020-1EN
Rev 08
Color steer
Slant the ROI (Region of Interest) of the Color Flow linear image
left or right to get more information without moving the Vscan Air
CL probe.
Use the controls on the center top and bottom to steer the angle.
NOTE: Color steer applies only when using the linear array transducer
of the Vscan Air CL.
Color Aliasing
If the blood flow velocity exceeds the Nyquist limit indicated by
the number displayed with the velocity bar aliasing may occur.
Aliasing appears as a shift in color from the color representing
positive velocity to color representing negative velocity or visa
versa.
Positive velocity indicates flow towards the transducer and
negative indicating flow away from the transducer.
The maximum velocity or Nyquist limit is displayed on top of the
velocity bar.
CAUTION
When blood flow velocity exceeds the max velocity range
covered by the device, color aliasing may occur, which results
in incorrect velocity estimates.