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Updated: Apr 25, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
Resolving the radiation risk debate
Emily A Caffrey1, Brant A Ulsh2
1Emily A. Caffrey is the program director of the Health Physics Program at the University of Alabama at Birmingham, Birmingham, AL, USA.
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When US President Trump signed an executive order in May 2025 seeking to streamline the adoption of nuclear energy by directing federal agencies to reconsider whether radiation protection standards have been unnecessarily strict, he reignited a debate that has smoldered in radiation science for decades. At the heart of the controversy is the linear nonthreshold (LNT) model-the idea that any amount of radiation, no matter how small, has damaging biological effects. Resolving whether LNT is a reasonable precaution or a costly misapplication of incomplete science will require not just better arguments, but better data.
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