GE Medical Systems 500, User Manual, Page: 152 / 636

Adding Color
LOGIQ 500 Basic Users Manual
2276612–100 Rev. 0
5–40

CFM Mode Sub-Menu Page 3
Spatial
Filter
OFF
Color
Tag
MID
Preset CFM
Tag
Positn
W.E.
Cancel
Packet
Size
Set Up ECG
Figure 5–18. CFM Mode Sub-Menu Page 3
Packet Size Spatial Filter
Description Controls the number of samples gathered
for a single color flow vector. Smooths color information so that it is less
grainy. It averages the color information
out over time.
Benefits Allows for the improvement of the color
sensitivity. Smooths color information.
Values Soft Menu values are VrySml, SMALL,
MID and LARGE.
NOTE: The “CFM Packet Size” is a
parameter that can be preset in the Set
Up/Custom Display menu page 6.
Off, 1, 2, 3, 4 and 5.
NOTE: The “CFM Spatial Filter” is a
parameter that can be preset in the Set
Up/Custom Display menu page 6.
Affects on
Other Controls When the packet size is decreased, the
frame rate is increased at the expense of
CFM image quality. When the packet size
is increased, CFM image quality is
improved at the expense of frame rate.
Note: This function does not work in Color
M-Mode or B/CFM with Pulsed Doppler.
Affects frame rate. The slower the spatial
filter averaging, the faster the frame rate;
the higher the spatial filter averaging, the
slower the frame rate.
Bioeffects
Acoustic
Output
Hazard
Changing packet size may change the TI
and/or MI.
Observe the output display for possible
effects.
Changing Spatial Average tends to
decrease MI.
Observe the output display for possible
effects.