Phantom Usage Illustration 274
1. A1-A4: Axial Resolution Target String Group,
The top strings of each target group are at the depth of 10mm, 30mm, 50mm, 70mm. The vertical
distances between adjacent strings in each target group are 3mm, 2mm, 1mm, 0.5mm respectively. The
horizontal distances between adjacent are 1mm.
2. B1-B4: Lateral Resolution Target String Group,
The depth of this target string are at 10mm, 30mm, 50mm, 70mm for B1-B4 group respectively. The
horizontal distance of adjacent strings in each group are 4mm, 3mm, 2mm, 1mm respectively.
3. C: Dead Zone Target Group,
The adjacent target string lateral intervals are 10mm. The distance of the target strings to the acoustic
window are 4mm, 3mm, 2mm respectively.
4. D: Vertical Distance Target Group,
This target group includes 12 strings, with the adjacent string interval is 10mm.
5. E: Horizontal Distance Target Group,
This target group includes 6 strings, with adjacent string interval are 20mm.
6. F1-F3: Anechoic (Cyst-like target, diameter: 2 mm, 4mm, 6mm) Target Group,
Cyst-like cylindrical shape target, is imbedded in the TM material with diameter of 2mm, 4mm, 6mm.
Their axials are parallel to the target string, with location at the depth of 15mm, 30mm, 45mm.
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