Mindray DP-8300, Operator'S Manual

Page: 46 / 101

4.2
4.2.1
4.2.2
B Mode
Depth
Description Adjusts the image depth. Depth is available for B/M modes.
Operations Depth, Zoom and Rotation share the same <Multifunctional Knob>. Press the
<Multifunctional Knob> to switch among the items and rotate the knob to adjust
the item when the corresponding indicator is lit up.
The <Multifunctional Knob> is in Depth mode by default. If not, press the knob
continually until the indicator corresponding to “Depth” is lit up, then rotate the
knob to adjust the depth.
The depth range varies depending on the transducer.
Effects Increase the depth, and you can see tissue in deeper locations; decrease the
depth, and you can see tissue in shallower locations.
Impacts Depth is in negative correlation with the frame rate: the larger the depth, the lower
the frame rate.
Changing depth will clear the cine memory.
Operation
Conflicts The image depth cannot be adjusted when the image is frozen.
Frequency
Description Adjusts the transducer transmitting frequency.
Operations Press <Freq.> to change the transmitting frequency.
The current transmitting frequency is displayed in the image parameter area.
Effects The higher the frequency, the better the axial resolution, and the worse the force of
penetration. The lower the frequency, the worse the axial resolution, and the better
the force of penetration.
For transducers that support harmonic, using harmonic (there is an “H” before the
frequency) will increase the contrast of the image.
Impacts Changing frequency will clear the cine memory.
Operation
Conflicts The transmitting frequency cannot be adjusted when the image is frozen.
4-2 Optimizing the Image