Protective devices against diagnostic medical X-radiation - Determination of attenuation properties of materials
Protective devices against diagnostic medical X-radiation - Determination of attenuation properties of materials
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1 Scope This part of IEC 61331 applies to materials in sheet form used for the manufacturing of protective devices against X- radiation of radiation qualities generated with X- ray tube voltages up to 400 kV and gamma radiation emitted by radionuclides with photon energies up to 1,3 MeV. This Part 1 is not intended to be applied to protective devices when these are to be checked for the presence of their attenuation properties before and after periods of use. This Part 1 specifies the methods of determining and indicating the attenuation properties of the materials. The attenuation properties are given in terms of:
— attenuation ratio ;
— build-up factor ;
— attenuation equivalent ;
together with, as appropriate, an indication of homogeneity and mass per unit area. Ways of stating values of attenu...
Упомянутые в описании и другие стандарты BS