Theory:   

Testing of new needles and education of young colleagues may cause unnecessary inconvenience to the patients. The biopsy phantom was developed to minimize problems of this kind.

Description:

The phantom contains:

Three spheres of 10 mm in diameter and

Seven spheres of 6 mm in diameter.

The attenuation of the background is about 0,5 dB/cm*MHz.

The sound velocity is 1540 m/sec.

The material of the lesions contains red dye, so that it can be identified even in fine needle biopsies. When thin needles are used, up to thousand biopsies can be taken from this phantom. After a biopsy, air may be trapped in the biopsy canal just as in patients. But in the phantom it may take a few days to disappear.

Specifications:

Dimensions: 14 * 14 * 7 cm. Weight: 0,9 kg

Background mass: Sound speed 1540 m/sec. Attenuation, back scattering and density: not specified.

Objects: Sound speed and density as background.

Instruction:

Handle with care!

The phantom is made of hydrogel, handle with care.
Use scanning jelly. The lifetime is dependent on the mechanical load.

Select a lesion.

Take a biopsy from the lesion.

Look at the color of the biopsy to see if the biopsy was taken from the expected lesion.