Jove
Visualize
联系我们

相关概念视频

Biological Effects of Radiation02:59

Biological Effects of Radiation

15.4K
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...
15.4K
Radioactive Decay and Radiometric Dating02:48

Radioactive Decay and Radiometric Dating

33.8K
Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
33.8K
Relative Risk01:12

Relative Risk

150
Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
150
Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

80
In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
80
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

91
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...
91
Absorption of Radiation01:05

Absorption of Radiation

723
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
723

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Radiation detriment and effective dose due to exposure to radon.

Journal of radiological protection : official journal of the Society for Radiological Protection·2025
Same author

Study on the radiation detriment.

Journal of radiological protection : official journal of the Society for Radiological Protection·2022
Same author

Low-Level Radon Activity Concentration-A MetroRADON International Intercomparison.

International journal of environmental research and public health·2022
Same author

The Metrological Traceability, Performance and Precision of European Radon Calibration Facilities.

International journal of environmental research and public health·2021
Same author

The conversion of exposures due to radon into the effective dose: the epidemiological approach.

Radiation and environmental biophysics·2017
Same journal

Correction: Assessment of radiotherapy effect and toxicity using tissue-associated DNA methylation markers in cell-free DNA: a study on prostate cancer.

Radiation and environmental biophysics·2026
Same journal

Stereolithography-printed Bi<sub>2</sub>O<sub>3</sub>-reinforced photopolymer nanocomposite samples with antibacterial and radiation shielding properties.

Radiation and environmental biophysics·2026
Same journal

Protective and remineralizing capacity of biosilicate, chitosan-based material, and fluoride on demineralized and irradiated enamel.

Radiation and environmental biophysics·2026
Same journal

Methodology for estimating intake from an unknown mixture of radioactive compounds.

Radiation and environmental biophysics·2026
Same journal

Assessing the variation of DNA damage response of individual human cells exposed to photon radiation.

Radiation and environmental biophysics·2026
Same journal

Quantifying measurement uncertainties in diode-based in-vivo dosimetry for Cobalt-60 high dose rate brachytherapy.

Radiation and environmental biophysics·2026
查看所有相关文章
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关实验视频

Updated: Jun 23, 2025

Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; 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

7.2K

关于暴露剂量转换的注意事项

Thomas R Beck1

  • 1Federal Office for Radiation Protection, Berlin, Germany. tbeck@bfs.de.

Radiation and environmental biophysics
|June 17, 2024
PubMed
概括
此摘要是机器生成的。

本研究使用流行病学数据重新评估将暴露转换为有效剂量. 对α粒子的修订后的辐射权重因子提高了风险评估的流行病学和剂量计方法之间的一致性.

关键词:
剂量转换公约 剂量转换公约有效剂量的有效剂量.辐射伤害 辐射伤害拉顿是什么意思 拉顿是什么意思

更多相关视频

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
07:57

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

2.8K
A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
09:49

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods

Published on: April 24, 2020

9.9K

相关实验视频

Last Updated: Jun 23, 2025

Irradiator Commissioning and Dosimetry for Assessment of LQ &#945; and &#946; 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

7.2K
Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform
07:57

Positron Emission Tomography-based Dose Painting Radiation Therapy in a Glioblastoma Rat Model using the Small Animal Radiation Research Platform

Published on: March 24, 2022

2.8K
A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
09:49

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods

Published on: April 24, 2020

9.9K

科学领域:

  • 辐射保护 辐射保护
  • 环境健康 环境健康
  • 流行病学 流行病学

背景情况:

  • 从暴露中有效转换剂量对于辐射保护至关重要.
  • 现有的方法,包括剂量计和流行病学方法,在准确估计的健康风险方面存在局限性.
  • 国际辐射保护委员会 (ICRP) 的指导方针要求根据最新的科学理解进行定期审查.

研究的目的:

  • 检查将暴露转换为有效剂量的流行病学方法.
  • 为了实现暴露评估的流行病学和剂量测量方法之间的一致性.
  • 解决当前指南中对每次暴露有效剂量潜在的高估问题.

主要方法:

  • 利用流行病学数据来估计每次暴露的有效剂量.
  • 比较低LET辐射和暴露对肺部的特定损害.
  • 应用生物动力学和剂量计模型进行剂量转换.
  • 在流行病学发现的背景下分析alpha粒子的辐射权重因子.

主要成果:

  • 流行病学方法,对α颗粒的辐射加权系数修订为大约10,更好地与剂量计估计保持一致.
  • 目前的ICRP 65剂量转换公约可能会将每次暴露的有效剂量高估两倍.
  • 在ICRP最近的出版物中,差异来自于肺部的不同组织权重因子.

结论:

  • 使用调整的辐射加权因子的修订后的流行病学方法提供了更可靠的暴露有效剂量的估计.
  • 目前的方法可能会高估引起的健康风险,需要重新评估辐射保护标准.
  • 需要进一步的研究来完善和其他内部沉积的放射性核素的剂量转换因子.