Abstract:20018 Background: As intensity modulated radiation therapy techniques are increasingly utilized to treat cancer, the area of normal tissue exposed to ionizing radiation is increasing. The biologic risks associated with this normal tissue low dose exposure (LDIR) are fundamentally unknown and of concern to cancer survivors following therapy. Current modeling for health regulations presupposes a linear, no-threshold model of radiation effects, which estimates the effect and risk at low dose by extrapolation fro… Show more
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