RSNA 2011: Linear non-threshold risk of low dose radiation debate settled
Published
01 November 2011
| Article by Excerpta Medica
RSNA 2011: Linear non-threshold risk of low dose radiation debate settled
A formal debate about the ability of the linear non-threshold (LNT) hypothesis to accurately predict risk for cancer from medical imaging examinations assembled formidable experts on both sides of the issue. The four participants agreed that this is an issue relevant only to very low radiation doses. They also agreed that this risk is very small and essentially never relevant to a patient who has an established clinical indication for an imaging. The disagreement centred on whether LNT is a reasonable approach to extrapolate increased risk of cancer at very small doses. Despite strong convictions on both sides of the debate, it was conceded that it may not be possible to resolve the issue given the limitations of current data acquisition. Although both sides of the debate were able to draw from substantial pools of data to support their perspective, both conceded that absolute proof is elusive.
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