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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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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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Three-Dimensional Phase Resolved Functional Lung Magnetic Resonance Imaging
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A MRI rotary phased array head coil.

Bing Keong Li1, Ewald Weber, Stuart Crozier

  • 1School of Information Technology and Electrical Engineering, The University of Queensland, Brisbane QLD 4072, Australia. joeli@itee.uq.edu.au

IEEE Transactions on Biomedical Circuits and Systems
|July 30, 2013
PubMed
Summary
This summary is machine-generated.

A novel rotary phased array (RPA) head coil offers homogenous brain imaging comparable to birdcage coils. This new design improves signal intensity, enabling faster and clearer magnetic resonance brain imaging.

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Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Radiofrequency (RF) Coil Engineering

Background:

  • Conventional MRI head coils face challenges in achieving uniform signal intensity, particularly deep within the brain.
  • Existing phased array coils often struggle to match the homogeneity of volumetric coils.

Purpose of the Study:

  • To introduce and evaluate a novel rotary phased array (RPA) head coil for magnetic resonance brain imaging.
  • To assess the image homogeneity and performance of the RPA head coil compared to conventional designs.

Main Methods:

  • A prototype 4-element, 2T receive-only RPA head coil with a unique "paddle-like" element structure was designed and constructed.
  • Experimental testing involved comparing the RPA coil against a conventional phased array head coil and a commercial birdcage head coil using phantom imaging.
  • Partial parallel imaging techniques were explored in conjunction with the RPA coil.

Main Results:

  • The RPA head coil demonstrated improved signal intensity in the center of phantoms compared to the conventional phased array coil.
  • Image homogeneity achieved by the RPA coil was found to be comparable to that of a commercial birdcage head coil.
  • The integration of partial parallel imaging facilitated rapid imaging acquisition.

Conclusions:

  • The proposed RPA head coil design offers a viable alternative for achieving homogenous brain images in MRI.
  • The RPA coil's performance rivals that of established birdcage coils, with potential for enhanced speed through parallel imaging.