In the statement, AAPM discusses disadvantages associated with the use of bismuth shields, such as unpredictable and potentially undesirable levels of dose and image quality, degraded image quality and accuracy, and the waste of some of the patient’s radiation exposure
AAPM then discusses alternative techniques that do not have these disadvantages, including adjusting automatic exposure controls parameters and the use of organ-based tube current modulation techniques.
“AAPM recommends that these alternatives to bismuth shielding be carefully considered, and implemented when possible,” according to the statement.
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