BS EN IEC 60522-1:2021

1 Scope This document applies to X-ray tube assemblies and to filtering material , in medical diagnostic applications up to a high voltage of 150 kV. For high voltages greater than 50 kV, this document applies to X-ray tube assemblies with tungsten or tungsten-alloy targets only .
NOTE 1     The filtering material in the X-ray beam can be removable or irremovable; it can be positioned in any orientation or can have any shape (e.g. tapering thickness) – although usually plane-parallel material, perpendicular to the reference axis is applied. Examples of filtering materials are added filters , a patient table (in case of an under-table X-ray tube assembly ), materials in the beam limiting device , or a breast compression device.
NOTE 2     The methodology and statement of compliance given in this document is for flat filters only, but the methodology can be used for any kind of non-flat filter . In th...