Chapter 3: Imaging 53
Imaging
Steering
(L38 and
HST only)
Select the desired steering angle setting from the on-screen menu.
This automatically changes pulsed wave (PW) Doppler angle correction
to the optimum setting.
• Steering angle of -15 degrees has an angle correction of -60 degrees.
• Steering angle of 0 degrees has an angle correction of 0 degrees.
• Steering angle of +15 degrees has an angle correction of +60 degrees.
Note: If two modes are active (CPD/DCPD/Color and PW Doppler) press the
Select key to toggle between the on-screen menus.
Variance
(Cardiac
only)
Select variance from the on-screen menu to turn on.
Invert
Select Invert from the on-screen menu to switch the displayed direction
of flow.
Note: Invert is only displayed when DCPD/Color is selected.
ROI Box
1 Use the touchpad to position or change the size of the region of
interest (ROI) box.
While you are moving or changing the size of the ROI box, you will
see a green outline of the new position or the new size as it moves on
the display.
2 Press the Select key to toggle between the position and size of the
ROI box.
The ROI box indicator on the left side of the screen is highlighted
green to show which function the touchpad is controlling.
Gain
Turn the Gain knob (on the lower left side of the control panel) to increase
or decrease the amount of color gain applied to the CPD, DCPD, or Color
ROI box.
Note: While in CPD, DCPD, or Color imaging, Near and Far knobs affect only
the 2D image.
2D
Imaging
Press the 2D or Color key to return to 2D imaging.
Note: If two modes are active (CPD/DCPD/Color and PW Doppler) press the
Select key to toggle between context menus.
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