User`s guide

Imaging Modalities
PW and CW Imaging
7-106 Revision D.0
Signal is audible,
but cannot see it.
Make sure the monitor is adjusted for the ambient
light. See “Calibrating the Monitor” on page 1-13 for
details.
Gain to display more Doppler information.
Compress and Reject to increase the range of
echoes displayed.
Filter.
For cardiac, readjust the transducer position to get
more parallel to flow. For vascular, use Cursor Angle
to adjust the estimated angle of flow.
Turn on Colorize.
Press and make sure Baseline Suppress is off.
Make sure that ADP is turned on.
Spectrum is noisy. Gain to display less Doppler information.
Filter to increase the hertz level below which
audible signals are removed (fewer signals display).
Reject to increase the amount of low-level signal
removed from the spectrum.
Compress to eliminate weaker signals and noise
from the spectrum.
Make sure the sample volume is as small as possible.
Press . Temporal Smooth and Velocity
Smooth. Also make sure Baseline Suppress is on.
Area around the
baseline is
blackened out.
Filter to decrease the hertz level below which
audible signals are removed (more signals display).
Press and make sure Baseline Suppress is off.
Spectrum is
speckled.
Press . Temporal Smooth and Velocity
Smooth.
Symptoms Suggestions
Setup
Setup
Setup
Setup