Current radiation protection philosophy is based on the linear no-threshold (LNT) theory. This theory postulates that any dose of ionizing radiation, no matter how small, causes a finite increase in cancer risk. The LNT theory does not predict any qualitative differences in effects between low doses delivered at low dose-rates (LDDR) and high doses delivered at high dose-rates (HDDR), It does not allow for the possibility that LDDR may decrease risks, and it does not account for nonlinear modifiers of risk. Brant Ulsh has made this report available at (http://www.researchgate.net/publication/234099731_The_new_radiobiology_returning_to_our_roots)
