Color Off
This function is only available in Read Mode. It turns off color display.
Balance
Balance establishes the amount of color displayed over bright echoes and
helps confine color within the vessel walls. Raising this balance displays color
on brighter structures. If you see color on vessel walls, the balance is probably
set too high. Additionally, wall motion ghosting can be suppressed with a low
balance setting.
WMF
The Wall motion filter eliminates vessel wall motion noise that is low in velocity
but high in intensity. Use a wall filter that is high enough to remove motion
artifacts, but that is sensitive enough to display low velocity flows in small
vessels. Available settings: low1, low2, mid1, mid2, high1, high2 and max.
PRF
The Pulse Repetition Frequency (
PRF) has direct influence on the velocity
range. The higher the Pulse Repetition Frequency the lower the velocity range.
As the display scale increases, the maximum Doppler shift information that can
be displayed without aliasing also increases. Aliasing is where the blood
velocity exceeds the maximum measurable velocity, causing the displayed flow
within the vessel to portray flow in the wrong direction. The disadvantage of
using a higher PRF is a loss of sensitivity to low flow velocities.
Scale
Adjust PRF button to activate
Scale. Scale enables the manual adjustment of
the PRF by adjusting the PRF button.
Max angle
Double tap Angle or use on screen gestures to display maximum probe angle
Quality
The higher the color resolution, the lower the frame rate. Available settings:
high, norm and low.
Cine #
Select the desired Cine #.
Flow Profiles
Select between 3 different buttons
UtA, UmA and MCA. Only one button can be
active at the same time. With pressing the button again it will be deactivated.
USe
Flow Presets for optimizing vessel flow representation scanning.
Info
Also see
Cine Menu
6.2.3 Power Doppler Mode and HD-Flow™
Power Doppler (PD) is a color flow mapping technique used to map the strength of the
Doppler signal coming from the flow rather than the frequency shift of the signal. Using this
technique, the ultrasound system plots color flow based on the number of reflectors that are
moving, regardless of their velocity. Power Doppler does not map velocity, therefore it is not
subject to aliasing.
High-Definition Flow (HD-Flow™) is a directional Power Doppler Mode incorporating the flow
direction into the displayed image. The focus of the settings for HD-Flow™ is on high spatial
resolution and low artefact visibility, allowing vessels to be seen with less blooming and finer
detail.
2D Mode
6-8
Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 Revision 4
Содержание Voluson Swift
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