Fluke Biomedical’s Model 74-001 IMRT phantom is designed to address commissioning and comparison of treatment planning systems and verification of individual patient plans and delivery.
Circular in shape, the phantom is approximately the size of an average patient, and is made from unique proprietary materials that reportedly mimic bone and water within 1 percent from 50 keV to 25 MeV, enabling thorough analysis of both the treatment planning and delivery systems.
Tissue equivalent interchangeable rod inserts for ionization chambers allow for point dose measurements in multiple planes in the phantom and film calibration. The phantom also supports film dosimetry with not only standard radiographic films but also GAFCHROMIC media. Optional inserts are available to support a variety of other detectors including TLD’s, MOSFET and diodes.
The 74-001 accommodates one Ready Pack 10x12 inch film in transverse orientation, two radiochromic or radiographic 10 cm x 10 cm films in transverse orientation and/or a stack or thirteen radiochromic pre-cut to 63.5 mm x 63.5 mm in three different orientations.
Five different electron density reference plugs can be interchanged in five separate locations within the phantom. The surface of the phantom is etched with grooves to ensure proper orientation of the CT slices and accurate film to plan registration. An optional cranial bone ring is also available.