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Professional/Education/Science Policies

Policy number Policy name Policy date Sunset date
PP 26-B AAPM Position Statement on the Use of Bismuth Shielding for the Purpose of Dose Reduction in CT scanning 11/29/2017 12/31/2022
Policy source
November 29, 2017 Board of Directors Meeting
Policy text
Bismuth shields are easy to use and have been shown to reduce dose to anterior radiosensitive organs in CT scanning. However, several disadvantages exist, including wasted radiation, reduced image quality, and unpredictable results when combined with automatic exposure control, tube current modulation or dual-energy acquisitions. Alternative techniques exist that can provide equivalent anterior dose reduction at the same or superior image quality without the limitations of bismuth shields. The AAPM recommends that these alternatives to bismuth shielding be carefully considered, and implemented when possible.

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