Mindray M5 Exp, Operator'S Manual

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5-22 Image Optimization
5.6.3 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 <iTouch> 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 or 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.
Dynamic Range
Description
This function is to adjust the transformation of echo intensity into color
signal.
Operation
Adjust through the [Dyn Ra.] item in the soft menu or menu.
The adjusting range is 10-70dB in increments of 5dB.
Effects
Increasing dynamic range will lead to higher sensitivity to low-power
signals, thus enhances the range of signals to display.