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相关概念视频

Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

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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...
295
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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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...
116
Imaging Studies for Cardiovascular System III: X-Ray01:20

Imaging Studies for Cardiovascular System III: X-Ray

219
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
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Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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相关实验视频

Updated: Jul 24, 2025

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
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[干预放射学诊断参考水平的研究进展]

Pei-Yi Qian1, Yun Liu1, Jia Ren1

  • 1School of Public Health,Hangzhou Normal University,Hangzhou 311121,China.

Zhongguo yi xue ke xue yuan xue bao. Acta Academiae Medicinae Sinicae
|July 5, 2023
PubMed
概括

诊断参考水平有助于优化干预过程中的辐射剂量. 本综述分析了它们的建立和应用,以指导中国.

关键词:
诊断参考水平的诊断参考水平剂量优化剂量优化干预性放射学是干预性的放射学.辐射剂量辐射剂量

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科学领域:

  • 医疗成像医学成像
  • 辐射保护 辐射保护
  • 放射学 放射学是一门学科.

背景情况:

  • 干预手术使患者暴露在X射线中,因此需要优化辐射剂量.
  • 诊断参考水平 (DRL) 对于管理医学成像中的辐射危险至关重要.
  • DRL指标的国际变化使剂量优化策略复杂化.

研究的目的:

  • 审查干预放射学中DRL的定义,建立方法和应用.
  • 确定影响DLR剂量变化的关键因素.
  • 为在中国的干预程序建立DRL提供基础.

主要方法:

  • 对干预放射学中DRLs现有文献的回顾性分析.
  • 检查用于表征辐射剂量的各种指标.
  • 对导致DLL剂量差异的因素的审查.

主要成果:

  • 在不同国家使用不同的指标建立了DRL.
  • 在DRL建立的方法中存在显著的差异.
  • 了解影响剂量的因素对于一致的DLR应用至关重要.

结论:

  • 干预放射学需要对DRL采取标准化的方法.
  • 这一审查为制定中国干预程序的DRL提供了基础.
  • 通过DRL优化辐射剂量可以提高患者的安全性.