Near Field
Ultrasound Phantom

QA standard
for high frequency probes

Model 050



The CIRS series of ultrasound phantoms, unlike human subjects or random scannable materials, offers a reliable medium which contains specific, known test objects for repeatable qualitative assessment of ultrasound scanner performance over time.

At normal or room temperatures the Zerdine® (1) material found in the Near Field phantom will accurately simulate the ultrasound characteristics found in human tissue.

The Model 050 has a series of wire targets that will appear as bright dots or lines on the ultrasound image. These targets are made from stainless steel with a diameter of 0.10 mm and a positional accuracy of ± 0.2 mm. There are also two known volumes, a 10 mm anechoic/+15 dB mass and anechoic focal lesions embedded within the phantom. These “masses” are made from Zerdine® that has a different contrast and attenuation relative to the background material.

The Model 050 was designed to allow for assessment of uniformity, dead zone, depth of penetration, beam profile/focal zone/lateral response width, vertical distance measurement accuracy, axial resolution, lateral resolution, anechoic masses, high contrast masses, volumetric measurement accuracy, and focal lesion detectability.

(1)US PATENT# 5196343


MATERIAL:
Zerdine®(1), solid elastic
water-based polymer
Freezing Point: 0° C
Melting Point: Above 100° C

ATTENUATION
COEFFICIENT:
0.5 dB/cm/MHz

SPEED OF SOUND:
1540 m/s

SCANNING WELL:
165 mm X 100 mm X 1.5 cm

SCANNING MEMBRANE: Saran-based laminate

TARGETS:
Material: Stainless Steel Wire
Diameter: 0.1 mm

VERTICAL PLANE TARGETS:
Depth Range: 8 cm
Spacing: 1 cm


RESOLUTION TARGETS:
Number of Arrays: 2
Depths: 1.5 cm and 2 cm
Axial Intervals: 0.5, 1 , 2, 3, 4, and 5 mm
Horizontal Intervals: 1, 2, 3, 4, and 5 mm


RING DOWN TARGET:
1 mm to 10 mm

VOLUMETRIC TEST OBJECT:
Calibrated asymmetric shape
7 cc and 21 cc



SPHERICAL CYSTS:
Diameter: 5 mm, 3 mm
Random Distribution.


High Contrast/Cystic Cylinder
 Depth: 1.0 cm
Contrat: HSdB/anechoic

\