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相关概念视频

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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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...
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Imaging Studies for Cardiovascular System V: CT01:28

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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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Updated: Jun 6, 2025

Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
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基于细胞外加多的对比剂.

R Soler-Fernández1, C Méndez-Díaz1, E Rodríguez-García1

  • 1Servicio de Radiología, Complejo Hospitalario Universitario A Coruña (CHUAC), A Coruña, Spain.

Radiologia
|November 27, 2024
PubMed
概括
此摘要是机器生成的。

基于加多的对比剂 (GBCA) 增强MRI扫描,但存在风险. 了解GBCA的特性,安全性和管理并发症对于在临床实践中有效使用至关重要.

关键词:
对比媒介对比媒介.在加多利尼奥 (Gadolinio) 那里.在加多利尼姆 (Gadolinium) 中.磁共振成像技术 磁共振成像技术它们是对比的媒介.患者安全 患者安全磁共振是一种磁共振.患者安全 患者安全

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科学领域:

  • 放射学 放射学是一门学科.
  • 医疗成像医学成像
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 基于细胞外加多的对比剂 (GBCA) 广泛用于磁共振成像 (MRI).
  • GBCA可以提高病变检测,组织特征和诊断准确性.
  • 虽然GBCA通常是安全的,但与潜在的风险和并发症有关.

研究的目的:

  • 审查GBCAs的特性,生物化学结构和生物分布.
  • 阐明GBCA对MRI信号强度的影响.
  • 讨论与GBCAs相关的安全方面,临床应用和不良事件的管理.

主要方法:

  • 审查GBCA的特性,包括加多分子的特征.
  • 对各种GBCA之间生化差异的分析.
  • 检查GBCA生物分布和对MRI信号的影响.
  • 收集安全数据和常见的临床用途.

主要成果:

  • GBCA通过改变信号强度来增强MRI,帮助诊断.
  • 不同的GBCA表现出不同的生化结构和生物分布特征.
  • 意识到风险,包括扩散和过敏反应,至关重要.
  • 对于患有功能衰竭,怀孕或哺乳期的患者,需要特别考虑.

结论:

  • 在MRI中,GBCA是有价值的工具,提供诊断的好处.
  • 对GBCA特性和安全性的全面了解至关重要.
  • 积极管理潜在的并发症可以确保患者的安全.
  • 适当使用GBCA需要了解其特性和临床应用.