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関連する概念動画

Biological Effects of Radiation02:59

Biological Effects of Radiation

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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...
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Mutations01:35

Mutations

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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...
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Radiation: Applications01:17

Radiation: Applications

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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...
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Isotopes and Radioisotopes01:28

Isotopes and Radioisotopes

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In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
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Types of Toxins01:36

Types of Toxins

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Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
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X-ray Imaging01:24

X-ray Imaging

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Updated: Sep 9, 2025

An Automated Microscopic Scoring Method for the γ-H2AX Foci Assay in Human Peripheral Blood Lymphocytes
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イオン化 放射線 に 曝露 する: 今日 の 危険 は 何 です か

Saumya S Gurbani1, Ichiro Ikuta2, Mina S Makary3

  • 1Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA (S.S.G.).

Academic radiology
|September 3, 2025
PubMed
まとめ
この要約は機械生成です。

医学的イメージングは 患者のケアに不可欠ですが 放射線によるリスクがあります このレビューでは,放射線リスク,用量削減技術,放射線科医のための安全プロトコルについて検討しています.

キーワード:
イオン化放射線放射線被曝放射線リスク放射線安全

さらに関連する動画

Establishment of a Robust and Reproducible Model of Radiation-Induced Skin and Muscle Fibrosis
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Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
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Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
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科学分野:

  • 放射線科 と 医学 画像
  • 放射線腫瘍学
  • 健康物理学

背景:

  • 医学的イメージングは現代の診断と患者の管理に不可欠です.
  • 進化するイメージング技術は 診断の有用性と放射線被曝のリスクを バランス付けする上で 課題を提示しています
  • 放射線学界は,臨床実務における電離放射線の安全性に関する問題に取り組む必要があります.

研究 の 目的:

  • 医学イメージングにおける電離放射線の危険性に関する最新の文献レビューを提供すること.
  • 放射線量を減らすための技術的進歩について議論する.
  • 医療イメージングにおける放射線安全プロトコルのベストプラクティスを提示する.

主な方法:

  • イオン化する放射線の危険性と用量削減技術に関する包括的な文献検索.
  • 医療画像機器における最新の技術革新の分析
  • 放射線防護のための既定および新興の安全プロトコルのレビュー.

主要な成果:

  • 有意な電離放射線被曝に関連した主要な診断手順の特定.
  • 投与量を最適化するための高度なイメージング技術とハードウェアの修正の概要
  • 患者とスタッフの放射線量を最小限に抑えるための根拠に基づいた勧告のまとめ

結論:

  • 医療イメージングでは,電離放射線のリスクを効果的に管理することが不可欠です.
  • 技術の進歩は放射線量を減らすための大きな機会を提供します.
  • 厳格な安全プロトコルの遵守は 安全で効果的な医療イメージングの実践に不可欠です