Mindray Imagyn 7, Operator'S Manual

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6 - 12 Operator’s Manual
6 Image Acquisition
6.4.2 Power Mode Image Parameters
In Power mode scan, the image parameter area on the right side of the screen displays the real-time
parameter values as follows:
Because both are based on Doppler color imaging, the adjustments of Power mode are same with
these of Color mode’s. Hence, only the adjustments of Power mode are introduced.
Power Gain
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.
Color Map
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.
•
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 (Dyn Ra.)
This function is to adjust the transformation of echo intensity into color signal.
Increasing dynamic range will lead to higher sensitivity to low-power signals, thus enhances the
range of signals to display.
6.5 V Flow
V Flow shows the blood direction and velocity via the arrow. The arrow length represents the
velocity, and the arrow orientation represents the direction of the blood flow. The blood flow is
displayed according to the updates of the arrow position and the velocity.
V Flow shows the blood situation on vortex flow, turbulent flow, regurgitation, etc.
NOTE:
• You can enter V Flow on B/Color real-time scan mode.
• It only supports single-window display, but does not support dual-window display and quad-
window display.
• V Flow image does not support the image magnification.
• The parameters on B mode and Color mode are same with these on V Flow mode during V
Flow scan.
• During V Flow scan, menus of image optimizing for B mode, Color mode and V Flow are
displayed on the touch screen at the same time. You can switch among them by tapping the
mode tabs.
Items Meaning
F Frequency
G Color Gain
WF Color Wall Filter
PRF Pulse Repetition Frequency PRF