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Chapter 7 Diagnosis Modes
C Mode Screen
ROI Box
ROI stands for Region of Interest. The ROI Box outlines the area of the 2D image where color (blood
flow) information is displayed in Color Doppler Mode.
Use the Change button to reposition or resize the ROI box. Each time you press the Change button,
the current state of the ROI box is displayed in the lower middle of the screen.
X
ROI Position: In this state, the position of the ROI box can be changed. Use the trackball to move
and position the ROI Box.
X
ROI Size: In this state, the size of the ROI box can be changed. Use the trackball to move the ROI
Box and specify its size.
Color Bar
In Color Doppler mode, the color bar indicates the direction and speed of blood flow. Based on the
Baseline at the middle, red indicates the direction and speed of blood flow toward the probe. By
contrast, the blue color indicates the direction and speed of blood flow away from the probe.
X
Adjusting the color bar baseline: Use the Baseline dial-button on the touch screen. If you rotate
the Baseline dial-button clockwise, the baseline on the color bar rises.
C Mode Menu
Frequency
Tap Frequency on the touch screen. This enables you to configure the probe’s frequency.
The selected frequency is displayed in the title area, allowing you to determine the state of the
current frequency easily.
Hide Color
Select C mode to use. If you tap Hide Color on the touch screen, the Color mode image will not be
displayed in the Color ROI area, and only the B mode image will be displayed. Tap this button again
to cancel the selection and return to Color + B/W mode.
Invert
Tap Invert on the touch screen. The color bar is inverted each time this button is tapped. When the
color bar is inverted, the color displayed on the image is also inverted.
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