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Related Concept Videos

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...
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Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
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Brain Imaging01:14

Brain Imaging

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These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
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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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Updated: Jun 12, 2026

Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury
10:33

Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury

Published on: August 14, 2019

[Diffusion-weighted MR imaging of the brain].

O Naggara1, L Létourneau-Guillon, C Mellerio

  • 1Unité de Recherche en Neuroradiologie Interventionnelle, Département de Radiologie, Centre hospitalier de l'Université de Montréal, Hôpital Notre-Dame, Montréal, Canada. o.naggara@ch-sainte-anne.fr

Journal De Radiologie
|May 29, 2010
PubMed
Summary

Diffusion-weighted MRI offers unique insights into brain diseases, detecting arterial origin cerebral ischemia and differentiating it from other pathologies. This advanced imaging technique aids in diagnosing various non-vascular brain conditions and provides prognostic value.

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Last Updated: Jun 12, 2026

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Published on: August 14, 2019

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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
17:06

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

Area of Science:

  • Neuroimaging
  • Medical Physics
  • Radiology

Context:

  • Conventional MRI sequences have limitations in detecting certain brain pathologies.
  • Patients with sudden focal neurological deficits require rapid and accurate diagnosis.
  • Distinguishing between vascular and non-vascular brain conditions is clinically crucial.

Purpose:

  • To highlight the diagnostic capabilities of diffusion-weighted MRI (DW-MRI) in neurological disorders.
  • To demonstrate DW-MRI's sensitivity in identifying acute cerebral ischemia.
  • To showcase DW-MRI's utility in characterizing diverse brain pathologies, including tumors and abscesses.

Summary:

  • Diffusion-weighted MRI provides physiological information beyond conventional sequences, excelling in detecting arterial cerebral ischemia and differentiating it from other causes of acute focal neurological deficits.
  • When combined with conventional MRI, DW-MRI aids in distinguishing brain abscesses from necrotic tumors and offers quantitative data for characterizing inflammatory, degenerative, metabolic lesions, and tumors.
  • The data acquired through diffusion-weighted imaging also holds significant prognostic value for various brain conditions.

Impact:

  • Enhances diagnostic accuracy for acute neurological events, particularly ischemic stroke.
  • Improves the differential diagnosis of brain lesions, guiding treatment strategies.
  • Provides prognostic information, aiding in patient management and therapeutic planning.