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Related Concept Videos

Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

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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,...
171
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

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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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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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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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Related Experiment Videos

Stroke: high-field magnetic resonance imaging.

Karl-Olof Lövblad1, Sven Haller, Vitor Mendes Pereira

  • 1Division of Neuroradiology, Department of Imaging and Medical Informatics, Geneva University Hospitals HUG, 4 rue Gabrielle-Perret-Gentil, 1211 Geneva, Switzerland. karl-olof.lovblad@hcuge.ch

Neuroimaging Clinics of North America
|May 3, 2012
PubMed
Summary

Advanced magnetic resonance imaging techniques improve acute stroke diagnosis by providing detailed insights into brain tissue status and bleeding. These innovations enhance the speed and resolution of imaging for better patient management.

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Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Diagnostic capabilities for acute stroke have significantly advanced.
  • Magnetic resonance imaging (MRI) is a cornerstone in stroke management.
  • Emerging MRI techniques offer deeper insights into ischemic processes.

Purpose of the Study:

  • To review the advancements in diagnostic modalities for acute stroke.
  • To highlight the role of new MRI sequences in stroke assessment.
  • To discuss the impact of higher magnetic fields on imaging quality.

Main Methods:

  • Utilizing advanced MRI sequences like diffusion and perfusion imaging.
  • Employing higher magnetic field strengths for improved signal-to-noise ratio.
  • Incorporating contrast-free perfusion and susceptibility-weighted imaging.

Main Results:

  • Diffusion and perfusion imaging reveal the infarcted core and hypoperfused brain areas.
  • Higher magnetic fields enhance imaging speed and/or resolution.
  • New sequences aid in identifying early bleeding and provide comprehensive ischemic process information.

Conclusions:

  • Novel MRI techniques offer enhanced diagnostic information for acute stroke.
  • These advancements improve the understanding of the ongoing ischemic process.
  • The quality and scope of stroke diagnosis are significantly improved by modern MRI.