Siemens ACUSON Antares, Instructions For Use Manual

Page: 101 / 230

3 S y s t e m C o n t r o l s
[ 1 ] I N S T R U C T I O N S F O R U S E
3 - 29
Color Parameter Menu Selections
Menu
Selection Tool Tip Description Settings
PRF PRF
Adjusts the scale factor of the Pulsed Repetition
Frequency (PRF). Transducer-
dependent
Flow Flow State Optimizes hemodynamic flow conditions.
Low – allows maximum sensitivity to low velocity
flows. The system achieves this by incorporating the
lowest possible filter settings and lower PRFs. You
may experience increased flash.
General
– produces an optimal balance between
flash (motion artifacts) suppression and maximum
sensitivity by using an adaptive wall filter.
High – optimizes the system for the high arterial
flow common to pulsatile vessels and stenotic
conditions.
Low
General
High
Invert Invert Switches the colors depicting forward and reverse flow
in the Color ROI and the color bar. On, Off
Priority Tissue Reject
(Priority) Adjusts the threshold for choosing to display Color or
2D-mode data for any pixel. 0 to 4
(current
setting)
Transmit
Frequency
Changes the transmit frequency of an active
multi-frequency transducer during Color.
Transducer-
dependent
Filter Wall Filter Activates and deactivates the adaptive wall filter. 0 to 3
R/S Res/Speed Adjusts the balance between the image line density
(resolution) and the frame rate. Increasing the line
density increases resolution and decreases frame rate.
0 to 5
Baseline% Baseline Adjusts the relative baseline position upward and
downward. A shift in the baseline adjusts the range of
displayed flow velocities without changing the
system PRF.
---
Persist Persistence Determines how long the colors corresponding to blood
flow velocity remain in the Color ROI before decaying
or being replaced by another color.
0 to 4
Smooth Spatial
Averaging
(Smoothing)
Adjusts the level of spatial (both axial and lateral)
averaging used to smooth the flow pattern display. 0 to 3
Maps Maps Selects a processing curve that assigns the velocity
range to a range of colors. A, B, C, D, E, F
Display Display Color
Activates and deactivates the Color information in the
ROI. The default setting is to display Color.
On, Off