Image Optimization 5-15
5.5.1 Power Mode Image Parameters
îš„ In Power mode scanning, the image parameter area in the upper left corner of the
screen displays the real-time parameter values as follows:
Parameter F G PRF WF
Meaning Frequency Power Gain Pulse Repetition
Frequency (PRF)
Power Wall Filter
îš„ During Power mode imaging, menus of image optimizing for B mode and Power
mode are displayed on the soft menu at the same time. You can switch between the
2 modes.
îš„ In Power mode, 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.
îš„ Parameters consistent with those in Color mode and B mode are not to be
introduced, please refer to relevant sections of the Color mode and B mode, while
special items of the Power mode are introduced in the following.
5.5.2 Power Mode Image Optimization
Power Gain
Description Refers to the overall sensitivity to flow signals, and this function is used to
adjust the gain in Power mode. The real-time gain value is displayed in the
image parameter area in the upper left corner of the screen.
Operation Rotate the <Color> knob clockwise to increase the gain, and anticlockwise
to decrease.
Or adjust it in the image parameter area.
The adjusting range is 0-100.
Effects Increasing the gain will increase the flow signal presented as well as
noise, while the signals may be missing when the gain is adjusted too low.
Map
Description This feature indicates the display effect of power image. The maps in
Power mode image are grouped into two categories: Power maps and
Directional Power maps.
Operation Select the map through the [Map] item in the soft menu.
There are 8 kinds of maps provided: P0-3 belong to Power Mode maps,
while dP0-3 belong to Directional Power Mode maps.
The Power maps provide information of blood flow, which are highly
sensitive to the low-velocity flows.
The Directional Power maps provide information of flow direction.
Impacts The function is available in real-time imaging, freeze or cine review status.
Dynamic Range
Description This function is to adjust the transformation of echo intensity into color
signal.
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