Mindray DC-80A, Руководство оператора

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5-14 Image Optimization
ROI Adjustment
Description This function adjusts the width and position of the ROI in Color mode.
Operations When the ROI box is a dotted line, roll the trackball to change the size.
When the ROI box is a solid line, roll the trackball to change the position.
Press <Set> to switch between the solid line and the dotted line.
Impacts
The larger the ROI box, the lower the frame rate, and the lower the resolution and
color sensitivity.
Image Quality
Description Refers to the operating frequency of the probe in Color mode, the real-time value of
which is displayed in the image parameter area in the top-right corner of the screen.
Operations Rotate the knob under [Img Qual.] on the touch screen or the mapping-menu item to
select the different frequency values.
The adjusting range of frequency values can be divided into 3 levels: penetration
preferred (Pen), general mode (Gen), and resolution preferred (Res).
Frequency values vary according to probe types. Select the frequency according to the
needs of the detection depth and the current tissue characteristics.
B/C Align
Description To set and restrict the maximum width of the B mode image to that of the Color ROI.
Operations Turn the function on or off using the [B/C Align] item or the mapping-menu item on the
touch screen.
Impacts The frame rate increases when the function is turned on.
Dual Live
Description This function is used to display the B image and Color image synchronously.
Operations
Turn the function on or off using the [Dual Live] item or the mapping-menu item on the
touch screen.
When the function is turned on, the window will automatically switch to dual windows
(one for the B image, and the other for the Color image).
Steer
Description The feature is used to adjust the ROI of the color flow of different angles with
immobility of the linear probe.
Operations Adjust using the <Angle/Steer> deflector rod on the control panel.
Effects
This function is used to adjust the scan angle of linear probes, so as to change the
angle between the transmitting beam and flow direction.
Impacts
Steer is only valid for linear probes.