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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...
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Absorption of Radiation

The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...
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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.
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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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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Compounds Contributing to the Modulation of Visceral Adiposity and Hepatic Lipid Metabolism in High-Fat-Diet-Fed Rats by <i>Pometia pinnata</i> (Matoa) Peel Powder: Identification of Pancreatic Lipase Inhibitors.

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Related Experiment Video

Updated: May 23, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ &alpha; and &beta; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
06:20

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition

Published on: March 11, 2021

[Radiation measurement and dose assessment].

Toshikazu Suzuki1

  • 1Research Center for Radiation Emergency Medicine, National Institute of Radiological Sciences.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|April 21, 2012
PubMed
Summary

Accurate radiation dose assessment requires evaluating external and internal exposures. Radiation measurement is crucial for early, reliable dose estimation during emergencies.

Area of Science:

  • Radiation physics and dosimetry
  • Environmental radioactivity
  • Radiation protection

Context:

  • Assessing effective dose is critical for radiation emergency response.
  • Exposure routes include external gamma/neutron, internal ingestion/inhalation, and skin beta emitters.
  • Early dose evaluation aids in mitigating radiation risks.

Purpose:

  • To outline necessary components for effective dose assessment in radiation emergencies.
  • To emphasize the importance of radiation measurement for accurate dose estimation.
  • To provide guidance on dose calculation methods and considerations.

Summary:

  • Effective dose assessment involves evaluating external (gamma, neutron) and internal (ingestion, inhalation) radiation exposure.
  • Skin equivalent dose is important for beta emitter contamination.

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An Automated Microscopic Scoring Method for the &#947;-H2AX Foci Assay in Human Peripheral Blood Lymphocytes
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An Automated Microscopic Scoring Method for the γ-H2AX Foci Assay in Human Peripheral Blood Lymphocytes

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Last Updated: May 23, 2026

Irradiator Commissioning and Dosimetry for Assessment of LQ &alpha; and &beta; Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
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Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities
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Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities

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An Automated Microscopic Scoring Method for the &#947;-H2AX Foci Assay in Human Peripheral Blood Lymphocytes
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An Automated Microscopic Scoring Method for the γ-H2AX Foci Assay in Human Peripheral Blood Lymphocytes

Published on: December 25, 2021

  • Early dose evaluation using simplified calculations and appropriate radiation measurements is essential.
  • Radiation measurement is the most effective method to prevent misjudgment in emergencies.

    • Impact:

    • Improved accuracy in radiation dose assessments during emergencies.
    • Enhanced preparedness and response strategies for radiological incidents.
    • Better protection of public health from radiation exposure.