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. 
 
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 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 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> key 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. 
 
Line Density 
Description  Line density determines the quality and information of the image.   
Operations  Adjust using the [Line Density] item on the touch screen. 
4 levels of line density are provided: H, L, UH, M. 
Effects  The higher the line density, the higher the resolution. 
Impacts  The higher the line density, the lower the frame rate.