Revision:1.0(2023–5–17)
47
The image effect is shown in the following figure.
44..44..22..22 Axial Resolution
Test procedure:
1.
Place the probe gently on the acoustic window of the phantom covered by water or ultrasonic
gel. Ensure that the axial resolution targets are displayed in the center of the image.
2. Move the focus to the axial resolution targets.
3. Adjust the gain, dynamic range, TGC, and other parameters, so that only the target line is
displayed clearly on the image with no tissue image in the background.
4. Read the distance between two targets that can be distinguished clearly
5. Repeat the preceding steps at other depths.
Diagnostic Ultrasound System
Service Manual
4 Function and Performance
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