ARRT REVIEW NUCLEAR MEDICINE ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

ARRT REVIEW NUCLEAR MEDICINE ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS Direct interaction Said to take place when an original ionizing incident happens on that macromolecule (Ex. DNA, RNA, Protein and enzyme) if a macromolecule becomes ionized it is considered abnormal and thus damaged. Indirect interaction Occurs if the initial ionizing incident takes place on a distant noncritical molecule, which then transfers that ionization energy to another molecule Indirectas the human body is approximately 75% water, it is theorized that most radiation actions with human are Indirect effects DNA is the most critical target of radiation, but it is the irradiation of water which cause Radiolysis of water If water is irradiated, the water is ionized and separates into molecular products which then produce free radicals Free radical Is an uncharged molecule that con