Radiation therapy test phantom ICRU

general purpose

Acrylic block phantom according to ICRU 231, suitable for tip-to-tip calibrations of therapy chambersSuitable for chamber calibration in high energy beamsComplies with ICRU 231 for determination of absorbed dose rateMakes it possible to calibrate chambers using the tip-to-tip or the replacement methodA variety of chamber adapters is availableThe solid state phantom type 2966 is designed according to ICRU report 231 and consists of a 200 mm x 200 mm x 120 mm acrylic block with a chamber hole and a 200 mm x 200 mm x 30 mm plate. The phantom makes it possible to place thimble chambers in measuring depths of 50 mm, 70 mm and 100 mm. The reference chamber and the chamber under calibration can be placed in the phantom tip-to-tip and irradiated simultaneously, which is the preferred calibration method if both chambers are of the same type. A variety of adapters for a number of ionization chamber types is available. The phantom has a 3/8 inch thread by which it can be mounted on a tripod to avoid backscatter radiation.