Revision:1.0(2023–5–17)
49
44..44..22..44 Axial Geometric Positioning Accuracy
• The measurement cursor should be placed on the top edge of the target image, not
the middle or bottom edge.
• The scanning plane should be perpendicular to each target line. In other words, the
scanning plane should be parallel to the phantom section plane.
Test procedure:
1.
Adjust the probe following the steps described in "Maximum Detection Depth".
2. Use a measurement caliper to measure distances between vertical targets by a step of 20 mm.
3. Select the measured value deviating the most from 20 mm, and calculate the error using the
following formula:
The image effect is shown in the following figure.
Diagnostic Ultrasound System
Service Manual
4 Function and Performance
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