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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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.
Description of the Procedures
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...
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

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,...
Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...

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Updated: Jun 22, 2026

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

銅に反応する磁気共鳴画像のコントラスト剤

Emily L Que1, Eliana Gianolio, Suzanne L Baker

  • 1Department of Chemistry, University of California, Berkeley, California 94720, USA.

Journal of the American Chemical Society
|June 4, 2009
PubMed
まとめ

新しいCopper-Gad (CG) コントラスト剤は,銅結合時にMRIリラクシビティを高めます. これらの薬剤は,高い選択性を示し,MRIによる銅レベル変化の可視化を可能にします.

科学分野:

  • 化学生物学 化学生物学とは
  • メディカルイマージング (医学イメージング)
  • ナノテクノロジー ナノテクノロジー

背景:

  • 磁気共鳴画像 (MRI) のコントラスト剤は,医療診断において極めて重要です.
  • 特定の分析物質をシグナルする反応性コントラスト剤の開発は,活発な研究分野です.
  • 銅イオンは生物学的プロセスにおいて重要な役割を果たし,銅イオンの不調は病気と関連しています.

研究 の 目的:

  • コパー・ガッド (Copper-Gad, CG) と呼ばれる,銅で活性化されたMRIコントラスト剤の新しいファミリーを設計,合成,評価する.
  • これらの薬剤における銅誘発のリラクシビティスイッチングのメカニズムの調査.
  • MRIを使用して銅レベルの変化を視覚化するためのCGセンサーの潜在能力を評価する.

主な方法:

  • Gd(3+) -DO3A核がチオエーテルに富んだ受容体と結合している銅-ガド (CG) 家族の合成.
  • 銅イオン (Cu+とCu2+) の存在と欠如における縦横のリラクシビティ (r(1) の評価.
  • 競合する金属イオンに対する選択性の評価と,17O NMRと核磁気リラクゼーション分散 (NMRD) を使用したメカニズム解明.
  • T(1) pondered ファンタムMRI 銅レベルの変化の可視化を示すために.

さらに関連する動画

Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
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Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging

Published on: December 4, 2016

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
14:01

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance

Published on: July 22, 2011

関連する実験動画

Last Updated: Jun 22, 2026

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
11:27

Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging

Published on: December 4, 2016

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance
14:01

Human In Vitro Suppression as Screening Tool for the Recognition of an Early State of Immune Imbalance

Published on: July 22, 2011

主要な成果:

  • CG剤はベースラインでのリラクシビティが低いが,Cu+またはCu2+の結合時に著しく増加する.
  • CG2とCG3は,Cu+結合時にリラクシビティが360%増加したことを示した.
  • センサーは,Zn2+のような他の生物学的に重要な金属イオンよりも,銅イオンに対する高い選択性を示しています.
  • 機構の研究は,銅の結合がGd (((3+) 調整環境を変化させ,リラキシビティを増加させることを示しています.

結論:

  • Copper-Gad (CG) ファミリーは,銅で活性化されたMRIコントラスト剤の新型クラスです.
  • これらの薬剤は,MRIベースの非侵襲的な銅レベルの検出と定量化のための有望なツールを提供します.
  • 開発されたセンサーは,銅の調節不良に関連した疾患の診断とモニタリングに潜在的な応用があります.