Leeds Test Objects’ 21mm Aluminium Patient-Equivalent Attenuator is designed for use when checking the image quality performance of general radiography systems.
The plate is 152.4 x 152.4mm square (6″ x 6″) and 19mm thick, with a permanently attached 2mm thick mounting plate (also aluminium), so that no extra material is present in the beam when imaging. This mounting plate has dimensions 168 x 175mm, for easy mounting into the accessory rails of common x-ray imaging systems. The phantom is supplied with 4 socket head screws, to enable fastening of an extra copper filter (optional) for use at 100kV.
Conforms to standards: IEC 62220-1-1 and IEC 61267:2005