Biological Effects of Radiation Part 3: Somatic Effects (ARRT Registry Review) acute radiation syndromes biological effects of radiation carcinogenesis cells deterministic (tissue reactions) versus stochastic embryo and fetus short-term versus long-term exposure somatic effects tissues Nov 23, 2025

When radiation interacts with the human body, it unleashes a cascade of biological effects. These effects vary based on the energy of the radiation, the type of tissue involved, and the duration and intensity of exposure. In this third installment of our series on the biological effects of radiation, we zero in on radiosensitivity—the measure of how likely cells, tissues, and systems are to be damaged by ionizing radiation. For radiography students and professionals preparing for the ARRT Registry, a de...

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Biological Effects of Radiation Part 2: Radiosensitivity (ARRT Registry Review) biological effects of radiation cell survival and recovery (ld50) dose-response relationshipsdose-response relationships let oxygen effect radiosensivity rbe relative tissue radiosensitivities Nov 22, 2025

Radiation's interaction with living tissue is not uniform — some cells and systems are more vulnerable than others. This property, known as radiosensitivity, is central to understanding diagnostic imaging, radiation therapy, and radiation protection principles. For those preparing for the ARRT Registry, mastering this concept is essential.

In this second part of our blog series on the biological effects of radiation, we will explore the factors that influence radiosensitivity, including dose-response r...

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