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Related Concept Videos

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...
Radial System Protection01:23

Radial System Protection

Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
In a radial system with a fault downstream of the third breaker, ideally, only the third breaker will open, isolating the fault and interrupting the load connected beyond it. The second breaker has a longer delay setting,...
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...
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...
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...
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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Related Experiment Video

Updated: Jun 23, 2026

Zebrafish Larvae as a Model to Evaluate Potential Radiosensitizers or Protectors
04:53

Zebrafish Larvae as a Model to Evaluate Potential Radiosensitizers or Protectors

Published on: August 25, 2022

Radioprotection.

Joel S Greenberger1

  • 1Department of Radiation Oncology, University of Pittsburgh Medical Center, 200 Lothrop Street, Pittsburgh, PA 15213, USA. greenbergerjs@upmc.edu

In Vivo (Athens, Greece)
|May 6, 2009
PubMed
Summary
This summary is machine-generated.

Radiation therapy is crucial for over 40% of cancer patients, but both acute and late radiation toxicity can negatively impact treatment outcomes. Understanding and mitigating these toxicities is essential for improving patient survival and quality of life.

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Area of Science:

  • Oncology
  • Radiation Oncology
  • Cancer Therapeutics

Background:

  • Over 40% of cancer patients undergo radiation therapy.
  • Radiation therapy significantly improves cancer survival rates.
  • Both acute and late radiation toxicities can compromise patient outcomes.

Purpose of the Study:

  • To highlight the prevalence of radiation therapy in cancer management.
  • To underscore the impact of radiation toxicity on treatment success.
  • To emphasize the need for strategies to manage radiation side effects.

Main Methods:

  • Review of existing literature on radiation therapy use.
  • Analysis of data on acute and late radiation toxicity.
  • Synthesis of information on the consequences of radiation toxicity.

Main Results:

  • Radiation therapy is a common cancer treatment modality.
  • Acute and late toxicities are significant challenges in radiation oncology.
  • These toxicities negatively affect the overall outcomes for cancer survivors.

Conclusions:

  • Radiation therapy is vital but associated with significant toxicities.
  • Managing acute and late radiation toxicity is critical for improving patient care.
  • Further research is needed to mitigate the adverse effects of radiation treatment.