GE M
EDICAL
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YSTEMS
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IRECTION
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V
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ERVICE
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ANUAL
Chapter 4 - Functional Checks
4-11
Section 4-4
Image Testing: 2D/M/CFM/Doppler
NOTE:
To perform these tests thoroughly, it is recommended to use three types of soft tissue phantoms: RMI
403GS, RMI 404G and RMI 1425A, or an equivalent surface that can simulate the same soft tissue
effects.
4-4-1
3S Probe Image Quality Tests
4-4-1-1
2D Noise Uniformity Test
4-4-1-2
2D Performance Test
Table 4-18 2D Noise Uniformity Test (3S)
Step
Task
Expected Result(s)
1
With a 3S probe in the air, select a
Cardiac preset.
2
Set the following parameters:
•
2D Gain = 50
•
Depth = 7cm
•
Dynamic Range = 80dB
Ensure that there are no white circular lines or other patterns in
the noise.
Table 4-19 2D Performance Test (3S)
Step
Task
Expected Result(s)
1
Use the Standard Imaging Phantom
RMI403GS.
2
Select a Cardiac preset.
3
Set the TGC so that the image is uniform.
