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GE
D
5446617-100, R
IRECTION
4-3-8-2
Doppler Mode Controls
Table 4-4
Control
Auto Spectral
Optimize [ASO]
(Auto)
Update
Doppler sample
volume gate position
(Trackball)
Doppler sample
volume length
Scale (Velocity
Scale)
Angle Correct
Quick Angle
Wall Filter
Baseline
Mode Cursor
Steer and Fine Steer Yes
Volume
Invert
Compression
Trace Method
Cycles to Average
Trace Sensitivity
Trace Direction
4 - 18
10
EVISION
Doppler Mode Controls
Possible Bioeffect
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Section 4-3 - General Procedure
Description/Benefit
Auto in Doppler Mode optimizes the spectral data. Auto
adjusts the Velocity Scale/PRF (on live images only),
baseline shift, Dynamic Range and invert (if preset).
The benefit of Auto can be found in reduced
optimization time and a more consistent and accurate
optimization process.
Toggles between simultaneous and update
presentation while viewing the timeline.
Moves the sample volume gate on the B-Mode's
Doppler Mode cursor. The gate is positioned over a
specific position within the vessel.
Sizes the sample volume gate.
Adjusts the velocity scale to accommodate faster/
slower blood flow velocities. Velocity scale determines
pulse repetition frequency.
If the sample volume gate range exceeds single gate
Scale capability, the system automatically switches to
high PRF mode. Multiple gates appear, and HPRF is
indicated on the display.
Estimates the flow velocity in a direction at an angle to
the Doppler vector by computing the angle between the
Doppler vector and the flow to be measured.
NOTE: When the Doppler Mode Cursor and angle
correct indicator are aligned (the angle is O), you
cannot see the angle correct indicator.
Quickly adjusts the angle by 60 degrees.
Insulates the Doppler signal from excessive noise
caused from vessel movement.
Adjusts the baseline to accommodate faster or slower
blood flows to eliminate aliasing.
Displays the Doppler Mode cursor on the B-Mode
image.
You can slant the ROI of the Color Flow linear image
left or right to get more information without moving the
probe. The angle steer function only applies to linear
probes.
Controls audio output.
Vertically inverts the spectral trace without affecting the
baseline position.
Dynamic range controls how echo intensities are
converted to shades of gray, thereby increasing the
range of contrast you can adjust.
Traces the average mean and peak velocities in
realtime or frozen images.
The average value over a number of cycles (from 1-5).
Adjust the trace to follow the waveform for signal
strength.
Specifies trace direction.
LOGIQ F S
ERIES
B
S
M
ASIC
ERVICE
ANUAL
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