Diagnostic X-ray imaging equipment. Characteristics of mammographic anti-scatter grids
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1 Scope and object This International Standard deals with the definitions, determinations and indication of characteristics of mammographic anti-scatter grids used in diagnostic X-ray imaging equipment, in order to reduce the incidence of scattered radiation , produced particularly in the body of the patient , upon the image reception area and thus to improve the contrast of the X- ray pattern . At present only focused anti-scatter grids are used in mammography. The scope of this standard is therefore restricted to focused grids . This standard is not intended to be applied for acceptance tests . This standard does not cover the homogeneity of performance over the area of a grid. This standard is not intended to be applied for the determination of the characteristics of mammographic anti-scatter grids under conditions which can normally be found in installations of X- ray equipment at the user’s site.
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