The device, a “multi-purpose” precision quality assurance tool, is an easy to use test device for daily, weekly or monthly quality assessments of mechanical and geometrical treatment parameters of linear accelerators or teletherapy units.
Features
• Collimator isocentricity
• Collimator field size accuracy
• Isocenter rotational stability
• ODI accuracy
• Gantry isocentricity table isocentricity
The multifunctional isocentric beam checker consists of a large opaque acrylic screen backed by a secondary plate, both supported by a base plate. The screen is inscribed with lines precisely defining corners, edges and center of the screen’s l0 cm×10 cm field. The screen can rotate about its axis in 30°, 45° and 60°.
A brass rod mounted on the phantom for checking the limit of deviation of isocenter point is also included.