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Precision Multi-Purpose
Phantoms
GAMMEX 403GS LE AND 403 LE
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The Precision Multi-Purpose Grey Scale Phantom Gammex 403GS LE offers new advanced technology for measuring the
image quality of high resolution ultrasound systems. Grey scale targets are provided for monitoring contrast and temporal
resolution, distinguishing different intensities of brightness and border delineation capabilities of the ultrasound system.
The Gammex 403 LE has the same general target layout and specifications as the 403GS LE but does not include grey
scale targets.
The Gammex 403GS LE offers carefully placed targets to measure resolution, depth of penetration and electronic caliper
distance accuracy. Axial resolution resolution tests. The resolution patterns as well as all vertical and horizontal targets are
constructed of 0.1 mm nylon fibers for better detail definition and spatial resolution. Grey scale targets are set at -6 dB,
+6 dB with high scatter relative to the background material and with attenuation properties equivalent to the Tissue
Mimicking (TM) material. A 10 mm anechoic cyst is also provided to evaluate system noise and geometric distortion.
The 403GS LE and 403 LE phantoms incorporate our new Tissue Mimicking (TM) gel which provides a smoother
background texture than conventional tissue mimicking gels. This gel reduces the backscatter that is inherent in other TM
gels and is fully compatible with the latest in tissue harmonics equipment and pin spacing patterns are small, offering better
axial technology. The 403GS LE also has a composite film scanning surface that has improved transmission properties so
more of the ultrasonic beam can be transmitted and received.
The Gammex 403GS LE features:
• Axial and lateral resolution targets at depths of 3, 8 and 14 cm for precise resolution measurements of any ultrasound system
• Anechoic cysts of 2, 4 and 6 mm diameter
• -6 dB, +6 dB and high scatter grey scale targets
• Convertible water dam for gel or water coupled scanning
• Integral cover to protect scanning surface
• Durable ergonomic design for ease of handling
• Available in 0.5 and 0.7 dB/cm/MHz attenuation
Optional accessories for the Gammex line of Ultrasound phantoms include Soft Foam-Lined Carrying Case, Rigid Case, or
the Precision Ultrasound Transducer Guide.
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This ultrasound image demonstrates a sector
scan of the Precision Multi-Purpose Grey Scale
Phantom Gammex 403GS LE. |
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SPECIFICATIONS |
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Tissue Mimicking Material
Speed of sound . . 1540 ±10 m/s at 22°C
Attenuation . . . . 0.5 or 0.7 ±0.05 dB/cm/MHz
Targets Anechoic Cysts
Diameters . . . . . 2, 4, 6 and 10 mm
Speed of sound . . 1540 ±10 m/s at 22°C
Attenuation . . . . 0.05 ±0.01 dB/cm/MHz
Grey Scale Targets
Contrast. . . . . . . -6, +6 and +12dB relative to background
Diameter . . . . . . 10 mm
Speed of sound . . 1540 ±10 m/s at 22°C same as background
Pin Targets
Diameter of nylon lines . . . . . 0.1 mm (0.004 in)
Vertical spacing. . 20 mm at 2 to 16 cm deep
Horizontal spacing . . . . . . . 30 mm at 2 and 12 cm deep
Axial resolution . . 3, 8 and 14 cm
Construction
Scanning surface . . . . . . . Composite Film
Walls . . . . . . . . . Extruded ABS
Dimensions . . . . . 23.2x8.25x18.5 cm (9.25x3.25x7.25 in)
Weight. . . . . . . . 2.8 kg (6 lbs 2.5 oz)
All acoustic measurements at 4.5 MHz, 22°C |
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