ZS3 Service Manual Page 180 of 295
3. Adjust parameters like gain, dynamic range, and TGC, to minimize the background
noise and display the target image clearly.
4. Record the minimal horizontal distance of two targets that can be clearly recognized.
5. Repeat the operation above for the transverse resolution testing targets at other
depths.
As shown in figure below.
Axial resolution
Test Steps:
1. Cover the scan surface of the phantom with water or ultrasound gel. Gently
contact the probe lens with the scan surface.
2. Scan the phantom to the longitudinal resolution testing targets.
3. Adjust parameters like gain, dynamic range and TGC to minimize the
background noise and display the target image clearly.
4. Record the minimal distance of two longitudinal resolution testing targets that
can be clearly recognized.
5. Repeat the operation above for the longitudinal resolution testing targets at
other depths.
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