6 Image Acquisition
Operator’s Manual 6 - 11
• pUMA (Power UMA): it is the power sub-mode of Color mode, used to display the density and
power of the red blood cells in the blood flow for a certain period of time, and express it with
different brightness colors, providing perfusion information of the blood flow, but not velocity
information.
• sUMA (Subtraction UMA): the function of sUMA is the similar to pUMA. Compared with
pUMA, sUMA displays more flow information and focus more on the tiny flow.
UMA provides a set of parameters for quick adjustment predefined for different organs in different
scenes, such as Placenta and Fetal Head.
Background
This function is used to adjust the rejection degree of the internal B image background of the color
ROI. The display of tiny blood flow is enhanced, by not displaying or reducing displaying the B
image, and only displaying the color flow energy signal.
This parameter is only applicable to sUMA.
6.4 Power Mode
Power mode provides a non-directionally display of blood flow in the form of intensity as opposed
to flow velocity.
DirPower (Directional Power Mode) provides the additional information of flow direction towards
or away from the probe.
• During Power mode imaging, menus of image optimizing for B mode and Power mode are
displayed on the touch screen at the same time. You can switch between the 2 modes by
tapping the mode tabs.
• In Power mode, the acoustic power is synchronous with that of B mode. Adjustment of the
depth to the B mode image will lead to corresponding changes in Power mode image.
6.4.1 Power Mode Image Scanning
Perform the following procedure:
1. Select a premium image during B mode or B+ Color scan, and adjust to place the area of
interest in the center of the image.
2.
Press <PD> to e
nter B+Power mo
de.
3. Use the trackball and <Set> to change position and size of the Region of Interest (ROI).
4. Adjust the image parameters during scan to obtain optimized images.
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