B-K Medical Pro Focus 2202, Руководство пользователя

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B-Mode – 2D Imaging 123
Number of Focal Zones
When you choose to have more than one focal zone, the zones are automatically
positioned within the focal range to give a uniform resolution throughout the range.
To select the number of focal zones:
•
Press
[
x
Resolution
]
to increase or decrease the number of focal zones.
or
• Click Res/Hz on the left side of the screen and select the value you want (or
point at Res/Hz and press
[
+/-
]
).
The current number of focal zones and frame rate are displayed on the screen next to
Res/Hz (as x/y Hz, where x is the number of focal zones and y is the frame rate).
Autofocus
Autofocus ensures that the center of the focal range is always centered in the
displayed image.
To turn autofocus on or off:
• Click Autofocus on the right side of the screen.
Dynamic Range (Contrast)
You can adjust the dynamic range (contrast) of the ultrasound image from 50 to 90
dB.
To adjust dynamic range:
• Press
[
n
Dyn Range
]
to increase or decrease the level
or
•
Click Dyn. Range under General on the left side of the screen and drag the
slider (or point at Dyn. Range and press
[
+/-
]
).
The current dynamic range setting is displayed on the screen next to Dyn. Range.
Zoom
Zoom To zoom in or out on the area you are interested in, adjust the Zoom box and then
make the part of the image that is inside the box fill the screen.
•
To zoom in on a small part of the scanned area, make the box smaller.
When you press
[
H
]
, the result depends on how many times you have already
pressed it. A long press on
[
H
]
turns off the Zoom box.