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Magnetic Resonance Imaging01:24

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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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Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
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Imaging Studies I: CT and MRI01:14

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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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Brain Imaging01:14

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
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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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DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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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

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Advanced techniques using contrast media in neuroimaging.

Jean-Christophe Ferré1, Mark S Shiroishi, Meng Law

  • 1Department of Radiology, Keck Medical Center of University of Southern California, Los Angeles, CA 90033, USA. Jean-christophe.ferre@chu-rennes.fr

Magnetic Resonance Imaging Clinics of North America
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Advanced magnetic resonance (MR) imaging uses contrast agents for brain scans. This overview covers dynamic susceptibility contrast and dynamic contrast-enhanced MR imaging for diagnosing brain tumors, stroke, and neurological diseases.

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Area of Science:

  • Radiology
  • Neuroimaging
  • Medical Imaging

Background:

  • Contrast media significantly enhances magnetic resonance (MR) imaging for neuroimaging.
  • Advanced MR techniques provide detailed insights into brain structure and function.

Purpose of the Study:

  • To provide an overview of advanced contrast-enhanced MR imaging techniques in neuroimaging.
  • To discuss clinical applications of these techniques in various neurological conditions.

Main Methods:

  • Focus on T2*-weighted dynamic susceptibility contrast (DSC) MR imaging.
  • Focus on T1-weighted dynamic contrast-enhanced (DCE) MR imaging.
  • Discussion of image acquisition and data processing methods.

Main Results:

  • Detailed explanation of DSC and DCE MR imaging principles.
  • Exploration of clinical utility in brain tumors, stroke, dementia, and multiple sclerosis.

Conclusions:

  • Advanced contrast-enhanced MR imaging techniques are crucial for diagnosing and managing neurological disorders.
  • These techniques offer valuable diagnostic information for a range of brain pathologies.