Radiation Exposure Assessment
Radiation Exposure Assessment - Related Videos
03:20
Studying Chronic Exposure of Mice to Ultraviolet B Radiation
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Cited by 1 •
2025
The protocol describes a study of the systemic and local skin effects of Ultraviolet B exposure in mice.
11:24
Measuring DNA Damage and Repair in Mouse Splenocytes After Chronic In Vivo Exposure to Very Low Doses of Beta- and Gamma-Radiation
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Cited by 3 •
2015
A protocol to evaluate changes in DNA damage levels and DNA repair capacity that may be induced by chronic in vivo low dose irradiation in mouse spleen lymphocytes, by measuring phosphorylated histone H2AX, a marker of DNA double-strand breaks, using flow cytometry is presented.
02:59
Biological Effects of Radiation
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2020
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they produce ions...
08:17
Dynamic Lung Tumor Tracking for Stereotactic Ablative Body Radiation Therapy
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Cited by 9 •
2015
Stereotactic ablative body radiation therapy (SBRT) involves the precise delivery of high-dose radiation to cancer tumor targets. A novel SBRT platform offers a first-of-its-kind gimbaled radiation accelerator mounted within a pivoting O-ring gantry capable of dynamic image-guided tumor tracking. Here, we describe dynamic tumor tracking for lung targets.
10:07
Assessing Teratogenic Changes in a Zebrafish Model of Fetal Alcohol Exposure
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Cited by 34 •
2012
In order to understand the molecular mechanisms of the ethanol-induced developmental damage, we have developed a zebrafish model of ethanol exposure and are exploring the physical, cellular, and genetic alterations that occur after ethanol exposure1. We then seek to find potential interventions and rapidly test them in this animal model.
FAQs
Radiation exposure assessment distinguishes absorbed, equivalent, and effective dose because each represents a different level of interpretation. Absorbed dose describes energy deposited in a target, while equivalent and effective dose support comparisons that account for radiation type or broader biological relevance. Using the appropriate measure helps cancer researchers relate records to tissues, people, or populations consistently.
Estimates depend on more than a recorded radiation reading. Radiation type, exposure duration, distance from the source, shielding, and the biological target all influence the dose assigned to a person or tissue. These variables explain why similar measured conditions may produce different estimates and why researchers document them when comparing exposure histories across study participants.
Cumulative exposure provides a way to examine whether total radiation received over time is associated with tumor development. In epidemiological studies, investigators can compare dose histories with cancer outcomes across populations, rather than relying on a single exposure event. The quality of that relationship depends on how consistently exposure information and reconstructed doses are assigned.
Reconstruction can combine personal dosimeter readings, environmental monitoring, medical records, and workplace histories. Researchers then interpret those records alongside exposure duration, distance, shielding, radiation type, and the relevant biological target. This workflow supports a more coherent dose estimate when investigators need to integrate several sources of information for an individual or study group.
These settings provide different kinds of exposure histories and therefore require careful comparison rather than automatic pooling. Workplace histories, environmental monitoring, medical records, and personal dosimetry may contribute unequally depending on the setting. Standardizing the dose information helps cancer researchers compare groups while preserving distinctions among occupational, environmental, diagnostic, and therapeutic exposures.
Researchers use the resulting dose estimates to strengthen risk models, relate cumulative exposure to tumor development, and compare populations or exposure settings. The same assessment also informs radiation-protection strategies by showing how estimated dose varies with exposure conditions. Its value extends from epidemiological analysis to practical decisions about reducing or managing radiation exposure.