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Professional/Education/Science Policies

Policy number Policy name Policy date Sunset date
PP 26-A Use of Bismuth Shielding for the Purpose of Dose Reduction in CT Scanning 2/7/2012 12/31/2017
Policy source
AAPM Board Vote - Closed on February 7, 2012
Policy text
Bismuth shields are easy to use and have been shown to reduce dose to anterior organs in CT scanning. However, there are several disadvantages associated with the use of bismuth shields, especially when used with automatic exposure control or tube current modulation. Other techniques exist that can provide the same level of anterior dose reduction at equivalent or superior image quality that do not have these disadvantages. The AAPM recommends that these alternatives to bismuth shielding be carefully considered, and implemented when possible.

Rationale for Policy


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