GE Vivid 3N Pro Series Service Manual page 140

GE M S
EDICAL YSTEMS
D FK091075, R
IRECTION
4-4-1-3 2D Penetration Test
Table 4-20
Step
1
2
3
4
4-4-1-4 CFM Noise Floor Test
Table 4-21
Step
1
2
3
4
4-12
04
EVISION
2D Noise Penetration Test (3S)
Task
Use the Standard Imaging Phantom
RMI403GS.
Select a cardiac preset.
Set the following parameters, and scan the
phantom at position (3):
• Gain: 37
• Power: 0 dB
• Depth: 20cm
• Focus: Max depth
• Dynamic Range: 65dB
Record the maximum depth at which tissue
can be differentiated from the noise.
CFM Noise Floor Test (3S)
Task
With the 3S probe in the air, select a Cardiac
preset and activate CFM.
Set the CFM ROI to its maximum size.
Set the following CFM parameters:
• Range: 20cm
• Tissue Priority: 0
Set the Active Gain until a few color noise dots
appear in the ROI.
Section 4-4 - Image Testing: 2D/M/CFM/Doppler
V 3N P
IVID RO
Expected Result(s)
The depth should be greater than 18cm.
Expected Result(s)
The Active Gain should be between 61and 65.
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XPERT ERVICE ANUAL