GE Voluson 730 Service Manual page 93

GE M S - K
EDICAL YSTEMS
D 105844, R
IRECTION EVISION
Table 4-3
Step
17
18
19
20
21
22
For further details refer to the Voluson® 730 Basic User Manual, Chapter 5, 2D-Mode.
U
RETZTECHNIK LTRASOUND
1
2D-Mode Functions
Task
PERSIST.
LINE FILTER
DYN.CONTR.
ENHANCE
REJECT
QUALITY
Chapter 4 Functional Checks
Expected Results
Persistence is a temporal filter that averages frames together. This has the
effect of presenting a smoother, softer image.
The signals of the neighboring pulses are less weighted for the display of
the actual pulse which considerably improves the detail lateral resolution and
signal-to-noise ratio.
Dynamic Range controls how echo intensities are converted to shades of
gray, thereby increasing the adjustable range of contrast.
Edge Enhance brings out subtle tissue differences and boundaries by
enhancing the gray scale differences corresponding to the edges of
structures. Adjustments to M Mode's edge enhancement affects the M Mode
only.
Selects a level below which echoes will not be amplified (an echo must have
a certain minimum amplitude before it will be processed).
Control to improve the resolution by reducing the frame rate.
Respectively reducing the resolution by increasing the image frame rate.
V ® 730 S
OLUSON ERVICE
M
ANUAL
4-9