B-K Medical Pro Focus 2202, Руководство пользователя

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156 Chapter 11
The angle of the Doppler line and Doppler gate are adjusted on the screen to
reflect the beam angle.
Angle Correction
You can apply an angle to the volume used for Doppler measurement. This makes
the Doppler spectrum be displayed in cm/sec instead of kHz.
To turn angle correction on or off:
•
Click Angle on the right side of the screen
or
•
Press
[
On
b
]
.
The angle correction line is superimposed on the Doppler gate.
To adjust the angle correction:
•
Select the angle correction line by clicking on it or by turning it on (see above),
and rotate it to the position you want using the trackball.
or
•
Click the angle correction value (degrees) under Doppler on the left side of the
screen and drag the slider (or point at the value and press
[
+/-
]
).
or
•
Press and hold
[
Angle
b
]
until the desired value is reached.
NOTE: The value will stop at +/- 60 degrees. Release
[
Angle
b
]
and press
again to adjust the angle further.
The current setting (in degrees) is displayed at the bottom of the list under Doppler
on the left side of the screen.
Gain
You can adjust the gain of the Doppler mode image. The view must be scanning
when you do this.
To adjust Doppler mode gain:
•
Turn the
[
M/Doppler Gain
]
dial.
or
•
Click Gain under Doppler on the left side of the screen and drag the slider (or
point at Gain and press
[
+/-
]
).
The current Doppler gain setting (a percentage) is displayed on the screen next
to Gain.