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Related Concept Videos

Biological Effects of Radiation02:59

Biological Effects of Radiation

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...
Radiation: Applications01:17

Radiation: Applications

The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
Absorption of Radiation01:05

Absorption of Radiation

The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
Mutations01:35

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Nuclear Power02:36

Nuclear Power

Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Radiation Pressure: Problem Solving01:09

Radiation Pressure: Problem Solving

The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force per...

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Related Experiment Video

Updated: May 10, 2026

An Automated Microscopic Scoring Method for the γ-H2AX Foci Assay in Human Peripheral Blood Lymphocytes
08:23

An Automated Microscopic Scoring Method for the γ-H2AX Foci Assay in Human Peripheral Blood Lymphocytes

Published on: December 25, 2021

Radiation safety.

Sarah Skinner1

  • 1Bendigo Health, Bendigo, Victoria. sskinner@bendigohealth.org.au

Australian Family Physician
|June 20, 2013
PubMed
Summary
This summary is machine-generated.

Diagnostic imaging like CT scans and X-rays increase radiation exposure, raising cancer risks. Doctors must understand radiation safety to advise patients on risks versus benefits for these essential medical tests.

Related Experiment Videos

Last Updated: May 10, 2026

An Automated Microscopic Scoring Method for the γ-H2AX Foci Assay in Human Peripheral Blood Lymphocytes
08:23

An Automated Microscopic Scoring Method for the γ-H2AX Foci Assay in Human Peripheral Blood Lymphocytes

Published on: December 25, 2021

Area of Science:

  • Medical Imaging
  • Radiation Oncology
  • Public Health

Background:

  • Diagnostic radiology, including computed tomography (CT) and X-ray, contributes significantly to public exposure to ionizing radiation.
  • Ionizing radiation exposure is a known risk factor for malignancy, with risk correlating to exposure levels.
  • Effective radiation safety knowledge is crucial for healthcare professionals.

Purpose of the Study:

  • To highlight the growing contribution of diagnostic radiology to community radiation exposure.
  • To emphasize the link between radiation exposure and increased malignancy risk.
  • To underscore the necessity for general practitioners to possess radiation safety knowledge for patient counseling.

Main Methods:

  • Review of current literature on diagnostic radiology procedures and radiation exposure.
  • Analysis of the relationship between ionizing radiation dose and cancer risk.
  • Assessment of the role of general practitioners in patient education regarding radiation safety.

Main Results:

  • Diagnostic imaging procedures are a substantial and increasing source of ionizing radiation for the general population.
  • The risk of developing cancer is directly proportional to the cumulative dose of ionizing radiation received.
  • Justification of each diagnostic test based on clinical necessity is paramount.

Conclusions:

  • General practitioners require a foundational understanding of radiation safety principles.
  • Informed patient counseling regarding the risks and benefits of diagnostic imaging is essential.
  • Balancing the benefits of diagnostic imaging with radiation risks is a key aspect of modern healthcare.