Probe 10S Image Quality Tests; Pencil) Probe Image Quality Test - GE Vivid 3N Pro Series Service Manual

GE M S
EDICAL YSTEMS
D FK091075, R
IRECTION
4-4-5

Probe 10S Image Quality Tests

4-4-5-1 2D Center Noise Test
NOTE: This test should be performed in a dark room.
Table 4-39
Step
1
2
3
4
4-4-5-2 Doppler Artifacts Test
Table 4-40
Step
1
2
4-4-6 2D (Pencil) Probe Image Quality Test
4-4-6-1 Image Quality Test
Table 4-41
Step
1
2
04
EVISION
2D Noise Center Test (10S)
Task
Perform this test with a 10S probe in the air for all the
probe ports.
Reduce the 2D Gain until the background noise
disappears.
Increase the Gain until "flashlight" noise is displayed in
the center of the screen, as shown opposite, and write
down the Gain value.
Increase the Gain until background noise is displayed,
and write down the Gain value.
Doppler Artifacts Test (10S)
Task
Perform this test in PW and CW Modes.
Find a suitable surface that can simulate a signal on the
neck (for example, RMI1425A) and look for artifacts in all
possible frequencies.
Image Quality Test (2D Pencil Probe)
Task
Activate CW Mode.
Find a signal in the neck or other suitable surface.
Find a suitable surface that can simulate a signal on the
neck (for example, RMI1425A) and look for artifacts
while searching for a signal.
Chapter 4 Functional Checks
V 3N P /E
IVID RO XPERT
Expected Result(s)
Ensure that the Gain difference is not higher than 4.
Expected Result(s)
No artifacts are detected.
Expected Result(s)
No artifacts are detected.
S M
ERVICE ANUAL
4-25