Samsung ACCUVIX XG Bedienungsanleitung PDF herunterladen (Seite 131)

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Chapter 4 Diagnosis Modes

C Mode Screen

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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 move and resize the ROI box. Each time you tap the Change button, the

current state of the ROI box is displayed in the lower left 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.

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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.

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Color Bar

In Color Doppler Mode, the color bar indicates the direction and speed of blood flow. Relative to

the baseline in the centre, the red color indicates the direction and speed of the blood flow towards

a probe. By contrast, the blue color indicates the direction and speed of the blood flow away from

a 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.

The baseline cannot be adjusted only when the Color Doppler Mode value is set to Variance.

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Wall Filter

Wall Filter is an electrical filter used to eliminate low-frequency Doppler signals caused by the

motion of vessel walls. Adjust Cutoff Frequency to remove from the screen the Doppler signals for

which the frequencies are lower than the Cutoff Frequency.

Use the Filter dial-button on the control panel. Rotating the Filter dial-button clockwise increases

the Cutoff Frequency for Wall Filter, and rotating it counter-clockwise decreases the Cutoff

Frequency for Wall Filter.

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Samsung ACCUVIX XG Bedienungsanleitung Seite 131