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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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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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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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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 II: MRI and Ventilation Perfusion Scan01:30

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Noninvasive In Vivo Small Animal MRI and MRS: Basic Experimental Procedures
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Low-field MRI: A report on the 2022 ISMRM workshop.

Adrienne E Campbell-Washburn1, Kathryn E Keenan2, Peng Hu3

  • 1Cardiovascular Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA.

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The first International Society for Magnetic Resonance in Medicine (ISMRM) Workshop on Low-Field Magnetic Resonance Imaging (MRI) highlighted advancements in accessible, cost-effective MRI systems. Key themes included overcoming signal-to-noise ratio limitations and identifying suitable clinical applications for widespread dissemination.

Keywords:
MRI hardwareaccessibilityimage acquisitionimage reconstructionlow-field MRIpoint-of-care MRIportable MRI

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Radiology

Background:

  • The first International Society for Magnetic Resonance in Medicine (ISMRM) Workshop on Low-Field MRI convened virtually in March 2022.
  • The workshop aimed to discuss technological advancements, novel methodologies, and clinical translation of low-field MRI systems.

Purpose of the Study:

  • To report on the scientific content and identify key themes from the ISMRM Workshop on Low-Field MRI.
  • To explore the potential of low-field MRI to expand access through cost reduction and portability.

Main Methods:

  • The workshop featured 368 registrants from 24 countries, including 34 invited talks, 100 abstract presentations, panel discussions, and live scanner demonstrations.
  • Discussions focused on hardware and software developments, new contrast mechanisms, and computational strategies to enhance signal-to-noise ratio (SNR).

Main Results:

  • Key themes included leveraging computational power and efficient acquisitions to mitigate SNR limitations inherent in low-field strength.
  • Participants deliberated on selecting appropriate clinical applications for low-field MRI in various settings, balancing image quality with information content for clinical decision-making.

Conclusions:

  • Low-field MRI presents an accessible imaging modality with potential for cost reduction and portability, expanding MRI usage.
  • Addressing technical and infrastructure challenges is crucial for the widespread dissemination and clinical value establishment of low-field MRI technology.