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U.S. Department of Health and Human Services

Radiation-Emitting Products

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Film Masking Devices

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Citation:

900.12(b)(15): Facilities shall ensure that film masking devices that can limit the illuminated area to a region equal to or smaller than the exposed portion of the film are available to all interpreting physicians interpreting for the facility.

Questions:

  1. Are there any specific requirements concerning the viewing conditions for screen-film mammograms?
  2. Are there any regulations regarding viewbox luminance?
  3. Our mammography exams are interpreted off-site. Do we need to have a viewbox, hot light, and masking materials on-site?
  4. Do masking view-scopes meet the masking requirement, even if their field of view is smaller than that of the size of the film?
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