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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...
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...
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...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Absorption of Radiation01:05

Absorption of Radiation

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

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Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

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Published on: May 2, 2018

U.S. Technologists' radiation exposure perceptions and practices.

James Johnston1, Jeffrey B Killion, Beth Vealé

  • 1College of Health Sciences and Human Servicesat Midwestern State University in Wichita Falls, Texas, USA.

Radiologic Technology
|March 17, 2011
PubMed
Summary
This summary is machine-generated.

Radiologic technologists know about rising medical radiation doses but may contribute to them due to insufficient training. Routine application of radiation safety practices needs reinforcement to reduce patient exposure.

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Area of Science:

  • Medical Imaging
  • Radiologic Technology
  • Radiation Safety

Background:

  • Persistent safety concerns exist with medical procedures utilizing ionizing radiation for imaging.
  • Despite 115 years of research on radiation hazards, effective safety measures remain a challenge.

Purpose of the Study:

  • To assess current attitudes and radiation protection practices among radiologic technologists in the U.S.
  • To investigate technologist practices in light of increased medical radiation doses.

Main Methods:

  • A survey was distributed to a stratified random sample of 2000 radiologic technologists in the U.S.
  • Data was collected from technologists listed in the American Registry of Radiologic Technologists.

Main Results:

  • Radiographers acknowledge the rise in U.S. population exposure from medical radiation sources.
  • Some self-reported practices by radiographers may be contributing to increased radiation doses.

Conclusions:

  • Radiologic technologists' awareness of increased exposure is noted, yet their practices may inadvertently elevate patient doses.
  • A deficit in in-service education is a likely factor in suboptimal radiation protection.
  • Standard radiation protection methods are not consistently applied, indicating a need for regular training and reinforcement.