D
IRECTION
5771498-100, R
EVISION
6
V
ENUE
™ S
ERVICE
M
ANUAL
Chapter 4 - General Procedures and Functional Checks
4-17
P R E L I M I N A R Y
•
Adjust
Gain
and
TGC
controls to adjust the range to be imaged.
•
Use the
Frequency
(move to higher frequencies) or the
Frame rate
control (move to lower frame
rate) to increase resolution in image.
•
Adjust
Dynamic range
to optimize the useful range of incoming echoes to the available greyscale.
•
Adjust
Compress
to further optimize the display.
•
Adjust
Reject
to reduce noise while taking care not to eliminate significant low-level diagnostic
information.
4-3-4-5
Using Color Mode
4-3-4-5-1
Color 2D
1) From an optimized 2D image, press
Color
.
2) Position the ROI frame over the area to be examined.
3) Press
Select
. The instruction
Size
should be highlighted.
4) Adjust the dimension of the ROI.
4-3-4-5-2
Color M-Mode
1) From M-Mode press
Color
.
2) Position the color area in the M-Mode display.
3) Press
Select
. The instruction
Size
should be highlighted.
4) Adjust the dimension of the color area.
4-3-5
PW/CW Doppler Mode Checks
4-3-5-1
Introduction
PW and CW Doppler modes are used to measure velocity (most often in blood).
Doppler mode can be done with a special pencil probe or with an ordinary probe. By using an ordinary
probe, you can first bring up a 2D picture for navigation purpose and then add PW/CW Doppler.
4-3-5-2
PW and CW Doppler Overview
Related information:
Refer to the
Venue™ User Manual
.
Summary of Contents for H45051VN
Page 477: ......
