MORGATE Biomédical - Testeurs biomedicaux > Fantômes d'Echographie en Mode B

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Model 83

Model 83, geometry phantom


Especially in obstetrical scanning, it is essential to have a correct geometry of the entire depicting system - including the documentation unit. Even a divergence of just a few millimeters is of significance.


The phantom consists of 107 threads arranged in rows turned 45 degrees and 90 degrees to one another. The position of each thread is correct within +/- 0,15 mm.

The attenuation and sound speed are tissue equivalent.

All threads are 0,1 mm polyamid (nylon).


Dimensions: 28 * 18,5 * 9,5 cm

Weight: 3 kg

Background mass:

Attenuation: 0,5 +/- 0,1 dB/cm*MHz.

Sound speed: 1540 +/- 15 m/sec.

Density: 1040 +/- 20 kg/m3.

Distance between threads in each row: n * 10 mm +/- 2 * 0,15 mm.


Once every month inspect the phantom.

The surface must always be covered with 1/2 - 1 cm preservative fluid.  Fluid that disappears by desiccation should be replaced by distilled water.

Once every 3 month replace the preservative fluid.

Please notice that the lid may not be 100 % tight. Drain fluid off before transportation, but never let it stay dry more than a few days.

The phantom will not stand frost. Safe storage temperature: 0 - 45 degrees Celsius.


Prescription for preservative fluid:

   906 ml Distilled Water

   94 ml Glycerol (85 %) or 65 g PEG MW400

   5 g  Acnibio OCS

   1 g Citric ascid