GE Vivid 3N Pro Series, Руководство по обслуживанию

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GE M
EDICAL
S
YSTEMS
D
IRECTION
FK091075, R
EVISION
04 V
IVID
3N P
RO
/E
XPERT
S
ERVICE
M
ANUAL
Chapter 4 Functional Checks 4-17
4-4-1-10 CW Operation Tests
Table 4-27 CW Operation Tests (3S)
Step Task Expected Result(s)
1
Select a Cardiac preset and set the 2D Gain
to 45.
2
Activate CW Mode and set the following CW
parameters:
• CW Gain: 70
• Velocity Scale: 3.0m/sec
CW Artifacts Test
3
Place the 3S probe on the RMI1425A
Phantom (top view A).
4
Place the CW cursor in the center of the
vessel. Ensure that the flow looks clear, the noise area is dark and that
there are no flash strikes or other artifacts.
5
Move the CW cursor to different locations
along the vessel. Ensure that the flow looks clear, the noise area is dark and that
there are no flash strikes or other artifacts.
CW High Velocity Artifacts Test
6
Increase the Velocity Scale to 8.6m/s (max).
7
Place the 3S probe on the Phantom
(top view A).
8
Place the CW cursor in the center of the
vessel. Ensure that the flow looks clear, the noise area is dark and that
there are no flash strikes or other artifacts.
9
Move the CW cursor to different locations
along the vessel. Ensure that the flow looks clear, the noise area is dark and that
there are no flash strikes or other artifacts.