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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...
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Imaging Studies IV: Magnetic Resonance Imaging01:27

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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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Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth
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Published on: February 9, 2012

Abdominal magnetic resonance elastography.

Meng Yin1, Jun Chen, Kevin J Glaser

  • 1Department of Radiology, Mayo Clinic, Rochester, MN, USA.

Topics in Magnetic Resonance Imaging : TMRI
|December 17, 2009
PubMed
Summary
This summary is machine-generated.

Magnetic resonance elastography (MRE) assesses tissue stiffness using shear waves. This technique shows promise for diagnosing liver fibrosis and evaluating other abdominal organs, offering a non-invasive alternative to biopsy.

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Area of Science:

  • Medical Imaging
  • Biophysics
  • Diagnostic Technology

Background:

  • Magnetic resonance elastography (MRE) is an MRI-based method for quantifying tissue mechanical properties.
  • MRE assesses tissue stiffness by analyzing shear wave propagation.
  • It has diverse applications, including tumor characterization and diffuse disease detection.

Purpose of the Study:

  • To review the applications of MRE in assessing abdominal organs.
  • To highlight MRE's role in diagnosing hepatic fibrosis as an alternative to liver biopsy.
  • To explore MRE's potential for evaluating other abdominal structures and portal hypertension.

Main Methods:

  • Utilizes magnetic resonance imaging (MRI) technology.
  • Applies shear waves to tissues to measure mechanical properties.
  • Develops practical protocols for abdominal and pelvic MRE applications.

Main Results:

  • MRE is effective for assessing abdominal organs like the liver, pancreas, and kidneys.
  • It accurately detects and characterizes hepatic fibrosis by measuring liver stiffness.
  • Liver and spleen stiffness measurements may indicate portal hypertension.

Conclusions:

  • MRE is a valuable, non-invasive tool for assessing abdominal organ mechanical properties.
  • It provides a safer, potentially more accurate alternative to invasive liver biopsy for fibrosis diagnosis.
  • Ongoing technical advancements expand MRE's diagnostic capabilities in the abdomen and pelvis.