Step wedge | definition of step wedge by Medical dictionary
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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.
step wedge (step wej)
Triangular aluminum device placed over a radiographic film during exposure to determine the penetrating ability of an x-ray beam.
References in periodicals archive
The tests indicated that the thirty-gauge wire from a standard step wedge
can be readily detected at the eighth step with an x-ray unit producing ninety-five keV.
1) and combinations step wedge
rotating disc measuring accuracy timer for radiographic equipment (1 Unit)
The Marshals Service uses a test object devised by the American Society of Testing Materials (ASTM) called a step wedge