Mindray DC-N3S - Page 76

5-4 Image Optimization
Acoustic Power
Description Refers to the power of ultrasonic wave transmitted by the probe, the real-
time value of which is displayed in the image parameter area in the upper
left corner of the screen.
Operation Adjust through the [A. power] item in the soft menu.
The adjusting range is 7%-100%, in increments of 3%.
Effects Generally, increasing the acoustic power will increase the brightness and
contrast of the image as well as the force of penetration.
Impacts You should perform exams according to actual situation and follow the
ALARA Principle.
Focus
Description
Refers to adjustment of focus of the ultrasonic beams, symbols as "
" of
which are displayed on the right of the image.
Operation Adjust the focus number through the [Focus Number] in the soft menu.
Adjust the focus position through the [Focus Position] in the soft menu.
In B mode, focus number can be switched among 1-4.
Effects The area that is focused will be of a higher contrast and resolution to
provide a much clearer image.
Impacts The greater the number of focus, the slower the frame rate to image.
Imaging Display Adjustment
Description More information can be obtained without moving the probe or changing
the sampling position.
FOV (Field
of View)
1. To change the scan range, click [FOV] on the soft menu to enter the
FOV range and FOV position adjustment status.
2. Press <Set> to switch between FOV range/position changing
according to the hint region display.
3. Rotate the trackball to adjust FOV position or the FOV range.
When the scan range is adjusted to the widest (ExFOV function is turned
on), the FOV position can not be changed.
You can get a much larger field of view when selecting a larger FOV.
Frame rate decreases when using a larger FOV.
B Steer Steer the transmitting beam through the [B Steer] item in the soft menu.
ExFOV Click [ExFOV] on soft menu to turn on/off the function.
For linear probes, the ExFOV function displays as trapezoid imaging.
For convex probes, the ExFOV function displays as extending the
scanning angle.
Impacts The FOV position/range is available only for convex and phase probes.
The B Steer function is available only for linear probes.
Line Density
Description The function determines the quality and information of the image.