step wedge(redirected from step wedges)
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A quality control device consisting of increasing thicknesses of absorber through which radiographs are taken to determine the amounts of radiation reaching the film.
See also: wedge
Medical Dictionary, © 2009 Farlex and Partners
step wedge(step wej)
Triangular aluminum device placed over a radiographic film during exposure to determine the penetrating ability of an x-ray beam.
Medical Dictionary for the Dental Professions © Farlex 2012