User's Manual

Acclarix AX8 Diagnostic Ultrasound System User Manual Imaging
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5.2 PW-mode
5.2.1. PW Touch Screen Controls
The following touch screen controls impact the PW image. Touch screen controls can be located
where you want them to be. See section 3.8 for details.
Name
Control
Description
Scale
Scale adjusts the range of velocities that are displayed. Upward
presses increase scale and downward presses decrease it.
Increasing scale when the PW cursor is relatively deep may
result in invoking HPRF, if it is configured. See section 5.2.2 for
details.
Baseline
The Baseline control adjusts the Doppler baseline. Upward
presses move the baseline up on the screen and downward
presses move the baseline down.
Invert
Normally signals above the baseline are positive velocities
(moving toward the transducers). However, when Invert is
pressed then negative velocities are above the baseline. Invert
does not affect the baseline position.
Angle
Correct
Adjust the Doppler scale to account for the angle between the
Doppler cursor and the blood flow. Upward presses increment
the angle. Downward presses decrement the angle. Angles
above 80 are not allowed.
Quick-Angle
Adjusts the angle correct quickly to one of 60/0/-60.
Filter
The Filter control removes excessive noise from movement of
vessel walls. Options of Low, Med. and High are available.
Colorize
Switches between grayscale and colorized (pseudo-color)
postprocessing maps.
Gray Map
Tint
Adjusts the current postprocessing, either grayscale or tinted
Dynamic
Range
The Dynamic Range, or log compression, adjusts how signal
intensities are converted to brightness. A high dynamic range
presents a flat spectrum, while a low dynamic range presents a
large range of spectrum brightness.