The Water Equivalent Mini Phantom for Radiotherapy eliminates scatter radiation and X-Ray beam electron contamination during the ion chamber measurements at a reference depth of 10 cm. Phantom material is Plastic Water® and precise machining improves the dosimetric accuracy and reliability of LINAC beam MU calibrations.

The phantom satisfies the requirements of ESTRO Booklet 3 “Monitor unit calculation for high energy photon beams” for Output, Volume-Scatter and Scatter Primary Ratio measurements.

The Mini Phantom provides an excellent tissue simulation and opportunity of true dose comparison with the 30 x 30 cm Plastic Water® slab phantom. By positioning the ion chamber at a reference depth of 10 cm, the Mini Phantom allows the physicist to isolate and investigate the influence of scatter radiation on a reference dose measured in a slab phantom.

The Mini Phantom stand allows for vertical or horizontal positioning of a 0.6 cc Farmer and smaller diameter chambers. Precise three axis rotation improves measurement accuracy.

Specifications

Characteristics: Water-Equivalent for photon beams 150 keV - 100 MeV
Composition: Plastic Water®
Shape: Cylindrical
Dimensions: As per drawing
Standard Cavity: Farmer 0.6 cc Ion Chamber
Optional Cavities: By request