VDO MG 2100 Spezifikationen Seite 407

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Rev 1.1 VisualSonics Vevo 2100 Imaging System Operator Manual 407
Appendix C: Descriptions of control panel controls
Press and hold
FN
while you tap this Down arrow key to decrease the keyboard
backlighting brightness between the the series of seven brightness levels and the
Off setting.
Baseline
Adjusts the vertical position of the horizontal zero frequency line (the baseline)
that divides the image data coming toward the transducer face from the image
data moving away from the transducer face. Push up to raise the line. Pull down
to lower the line.
Beam Angle
Helps you generate flow direction information when the orientation of your
target vessel is perpendicular or almost perpendicular to your ultrasound beam.
This control applies a graduated series of transmission and reception delays to the
ultrasound sound signals of each crystal in the transducer. These carefully
calibrated sequences can effectively steer the ultrasound beam in order to detect
minute frequency shifts.
In PW Doppler Mode and PW Tissue Doppler Mode, the current beam angle
setting is displayed in the top-left corner of the B-Mode scout image.
In Power Doppler Mode and Color Doppler Mode, this changes the color box.
Active during Color Doppler Mode, Power Doppler Mode, PW Doppler Mode,
PW Tissue Doppler Mode imaging sessions.
To use this rocker switch control:
Push up or pull down the control depending on the orientation of your
transducer to steer the beam angle.
B-Mode
Activates B-Mode acquisition and begins displaying the acquired B-Mode data in
the B-Mode window.
Burst
Transmits an ultrasound pulse at maximum setting. This destroys the contrast
agent in the region of interest. In the cine loop the system displays a vertical green
bar to mark the destruction event.
Cine Loop Review
Push-button dial.
Press to toggle cine loop playback on/off.
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