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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...
Brain Imaging01:14

Brain Imaging

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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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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Computed Tomography (CT) scan:
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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,...
Assessment of Diffusion and Perfusion01:17

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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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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
09:33

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Published on: July 28, 2013

Methodology of diffusion-weighted, diffusion tensor and magnetisation transfer imaging.

S J Price1, D J Tozer, J H Gillard

  • 1Academic Neurosurgery Division, Department of Clinical Neuroscience, UCL, London, UK. sjp58@cam.ac.uk

The British Journal of Radiology
|March 22, 2012
PubMed
Summary
This summary is machine-generated.

Diffusion imaging and magnetisation transfer imaging reveal microscopic tissue characteristics below MRI resolution. These advanced MRI techniques offer unique insights into tumour structure by analyzing water molecule and proton movement.

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Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Biomedical Engineering
  • Radiology

Background:

  • MRI can probe tissue characteristics beyond its spatial resolution.
  • Diffusion imaging and magnetisation transfer imaging are advanced MRI techniques.
  • These methods provide information on microscopic and molecular tissue structure.

Purpose of the Study:

  • To review the theory and technical aspects of diffusion imaging and magnetisation transfer imaging.
  • To highlight the utility of these techniques in examining tumour tissue.
  • To explain how MRI can provide sub-resolution tissue insights.

Main Methods:

  • Diffusion imaging: analyzes water molecule diffusion in the extravascular extracellular space.
  • Magnetisation transfer imaging: assesses proton exchange between water and macromolecules.
  • Review of underlying principles and technical considerations for both techniques.

Main Results:

  • Diffusion imaging provides contrast based on water mobility.
  • Magnetisation transfer imaging provides contrast based on proton exchange.
  • Both techniques offer unique information on microscopic and molecular tumour characteristics.

Conclusions:

  • Diffusion imaging and magnetisation transfer imaging are powerful MRI tools.
  • These techniques offer valuable insights into tumour microenvironment and molecular composition.
  • Understanding their principles is key to their application in oncology.