Revision:1.0(2023–5–17)
77
A1-A4: Axial resolution target group
B1-B4: Lateral resolution target group
C: Dead zone target group
D: Vertical target group
E: Horizontal target group
F1-F3: Pseudocyst with diameters of 2 mm, 4 mm, and 6 mm
• Line target system
The TM material is embedded with 11 line targets, which are distributed as shown in the figure.
A1-A4:
Axial resolution target groups. The topmost lines in each target locate at the depths of 10 mm,
30 mm, 50 mm, and 70 mm. The center longitudinal distances of the target groups (top down)
are 3 mm, 2 mm, 1 mm, and 0.5 mm, and the horizontal distance is 1 mm.
B1-B4:
Lateral resolution target groups. They are located at depths of 10 mm, 30 mm, 50 mm, and 70
mm, with a center horizontal distance of 4 mm, 3 mm, 2 mm, and 1 mm in each group.
C:
Dead zone target group. The center horizontal distance of the four adjacent lines on the right is
10 mm, and the distances to the acoustic window are 8 mm, 7 mm, 6 mm, and 5 mm. The
center horizontal distance of the three adjacent lines on the left is 15 mm, and the distances to
the acoustic window are 4 mm, 3 mm, and 2 mm.
D:
Vertical target group. It contains 12 target lines, with a 10 mm center distance between two
adjacent lines.
E:
Horizontal target group. It is located at a depth of 40 mm, and the center distance between two
adjacent lines is 10 mm.
• Simulated lesions F1-F3
Diagnostic Ultrasound System
Service Manual
8 Appendix
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