← Physics domain / Radiation Biology
Radiation Biology
DNA damage and repair, cell-cycle sensitivity, stochastic vs deterministic effects, LNT, fetal effects, and the numerical thresholds the ABR loves to test. Ground your safety counseling in mechanism.
Categories Click to drill this category
DNA damage & LET →DSB as lethal lesion, RBE/OER, clustered damage.
Cell & 4 R's →Cycle sensitivity, oxygen effect, repair, repopulation.
Stochastic vs deterministic →LNT model, BEIR VII, threshold definitions.
Clinical thresholds →Erythema, cataract, sterility, ARS, tissue weighting.
Fetal effects →Gestational sensitivity windows, safe dose, counseling.
Study loops Pick one
MCQ Bank (15)
ABR-style questions with rationale and references for every answer.
Flashcards (15)
Thresholds, weighting factors, 4 R's, fetal sensitivity windows.
Cases (2)
Fluoroscopy skin injury, CT abdomen-pelvis in first-trimester pregnancy.
Domain Mock
Physics-only mock covering all subtopics.
Microsims Interactive teaching tools
Curated reading Go deeper
- Radiation biology overview — Radiopaedia
- The 4 R's — Radiopaedia
- Deterministic effects — Radiopaedia
- LNT model — Radiopaedia
- Fetal radiation dose — Radiopaedia
- Hall & Giaccia — Radiobiology for the Radiologist, 8th ed.
- ICRP Publication 103 — Recommendations