Mindray Imagyn 7, Operator'S Manual

Page: 141 / 492

6 Image Acquisition
Operator’s Manual 6 - 15
WF (Wall Filter)
It filters out flow noise. The bigger the value, the more the filtered noise. The real-time value (WF)
is displayed in the image parameter area.
Flow Brightness
Used for adjusting the blood brightness of the grey background.
The grey background of the blood flow effect becomes brighter with the value becoming larger.
Colorbar Scale
The maximum velocity of the color map.
The velocity on the color bar becomes larger with the value becoming larger and the arrow’s color
changing.
The velocity on the color bar becomes smaller with the value becoming smaller and the arrow’s
color changing.
Edge Smooth
The blood against the edge becomes smooth with the value being larger.
Arrow Lifetime
The arrow appears longer with the value becoming larger.
Arrow Size
The end point of the arrow does not change with the value becoming larger, but the arrow length
becomes longer.
The end point of the arrow does not change with the value becoming smaller, but the arrow length
becomes shorter.
Trig Type
Set trigger type.
Under V Flow mode, turn on ECG and select “Manual” or “R” or “R100/200/300/400” trigger
mode. Image will be captured in 100/200/300/400ms after R wave and ECG wave will be marked
by red at that time.
ROI Size
Adjust the size of ROI.
Acquire Time
Adjust the acquisition time.
Sensitivity
This function is an indication of the ability to detect flow, which is used to adjust the accuracy of
color flow.
The higher the sensitivity is, the more sensitive indication for low-velocity flow becomes.
It affects the frame.
6.5.3 Vector Flow Quantitative Analysis
Single point-time curve
Perform the following procedure:
1.
Capture the image. Follow steps 1-5, see “6.5.1 Basic Operations”.