ATS 570 - Dead Zone (A1 & A2)

6
Specifications
General
General
Tissue Mimicking Material
Tissue Mimicking Material
Overall Dimensions
270 x 215 x 96 cm
Type
Urethane rubber
Housing Material
PVC
Freezing Point
< -40°C
Scan Surfaces
2
Melting Point
> 100°C
Scan Wells
1
Attenuation Coefficient
0.5 dB/cm/MHz ± 5.0%
Weight
4.55 Kg (10 lb)
Speed of Sound
1450 m/s ±1.0% at 23°
Line Targets
Line Targets
Line Targets
Line Targets
Line Targets
Line Targets
Material Diameter
t Nylon
Monofilame
Monofilamennt Nylon
.12 mm
.12 mm
± 0.1 mm
Dead Zone Groups
Lateral Displacement
Interval Spacing
Scan Surface Depth
Standard
Endoscopic
A1
5 mm
1 mm
2-10 mm
A2
5 mm
1 mm
2-10 mm
Vertical Groups
Number of Targets
Interval Spacing
Depth
B1
17
10 mm
10-160 mm
B2
8
10 mm
10-80 mm
Horizontal Linear
Groups
Number of Targets
Interval Spacing
Scan Surface Depth
Standard
Endoscopic
C1
5
10 mm
40 mm
C2
5
10 mm
40 mm
Axial-Lateral
Resolution Groups
Number of Targets
Interval Spacing
Scan Surface Depth
E1
Standard
E2
Endo-
scopic
E3
Scan
Well
Horizontal Sector
Groups
Number of Targets
Interval Spacing
Scan Surface Depth
Standard
Endoscopic
D1
5
10 mm
50 mm
D2
5
10 mm
50 mm
Axial-Lateral
Resolution Groups
Number of Targets
Interval Spacing
Scan Surface Depth
6
6
6
Horizontal Sector
Groups
Number of Targets
Interval Spacing
Scan Surface Depth
Standard
Endoscopic
D1
5
10 mm
50 mm
D2
5
10 mm
50 mm
Axial-Lateral
Resolution Groups
Number of Targets
Interval Spacing
Scan Surface Depth
5, 4, 3, 2, 1 mm
5, 4, 3, 2, 1 mm
5, 4, 3, 2, 1 mm
Horizontal Sector
Groups
Number of Targets
Interval Spacing
Scan Surface Depth
Standard
Endoscopic
D1
5
10 mm
50 mm
D2
5
10 mm
50 mm
Axial-Lateral
Resolution Groups
Number of Targets
Interval Spacing
Scan Surface Depth
40 mm
60 mm
40 mm
Horizontal Sector
Groups
Number of Targets
Interval Spacing
Scan Surface Depth
Standard
Endoscopic
D1
5
10 mm
50 mm
D2
5
10 mm
50 mm
Anechoic Target
Structures
F1
F2
Gray Scale Target
Structures
G1
Standard
G2
Endo-
scopic
G3
Scan
Well
Type
Non-echogenic, cylindrical
Non-echogenic, cylindrical
Type
Echogenic, Cylindrical
Echogenic, Cylindrical
Echogenic, Cylindrical
Size
8, 4, 2 mm
6 mm
Diameters
10 mm
10 mm
6 mm
Number of Targets
27
1
Scan Surface Depth
30 mm
20 mm
30 mm
Depth
1 0 – 170 mm
30 mm
Number of Targets
4
4
2
Interval Spacing
10 & 20 mm
NA
Contrast relative to
background material
(dB)
+6, +3, -3, -6
+6, +3, -3, -6
+3, -3
*Nominal dimensions
DEAD ZONE (A1 & A2)
Description and Reason For Testing
The dead zone is the distance from the front face of the transducer to the first identifiable echo at the phantom/
patient interface. The dead zone occurs because an imaging system cannot send and receive data at the same
time. Therefore, no clinical data can be collected in this region. However if artifacts are noted within the dead
zone, they may indicate fluctuations in the input power to the system. The depth of the dead zone depends upon
the frequency and performance of the transducer and the pulsing/receiving section of the system.
Testing Procedure