Radiation-Emitting Products

Screen Film Contact - Semiannual Quality Control Tests

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900.12(e)(4)(ii): Semiannual quality control tests. Facilities with screen-film systems shall perform the following quality control tests at least semiannually:

(ii)Screen-film contact. Testing for screen-film contact shall be conducted using 40 mesh copper screen. All cassettes used in the facility for mammography shall be tested.

  1. What optical density (or range) should the facility use for the screen-film contact test and what is the criteria for determining pass or fail for a cassette?
  2. I have been following the ACR manual and have used an optical density range of 0.7-0.8 when doing my screen-film contact test. The film manufacturer recommends that I use a higher optical density. What should I use under the regulations?
  3. Must the screen-film contact and uniformity of screen speed tests be performed on new cassettes prior to clinical use and must the medical physicist perform the tests?


Page Last Updated: 08/11/2014
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