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Low-Field MRI Improves Lung, Cardiac Imaging

  • Magazine Article
  • TBMG-35773
Published 2020-01-01 by Tech Briefs Media Group in United States

National Institutes of Health researchers, along with researchers at Siemens, have developed a high-performance, low-magnetic-field MRI system that vastly improves image quality of the lungs and other internal structures of the human body. The new system is more compatible with interventional devices that could greatly enhance image-guided procedures that diagnose and treat disease, and the system makes medical imaging more affordable and accessible for patients.

Magnetic Metamaterial Could Improve MRIs

  • Magazine Article
  • TBMG-35772
Published 2020-01-01 by Tech Briefs Media Group in United States

Researchers have developed a low-cost, “intelligent” metamaterial that could revolutionize magnetic resonance imaging (MRI), making the entire MRI process faster, safer, and more accessible to patients around the world.

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Magnetic Resonance Imaging of the Internal and External Hydrodynamics in Wall-flow Particulate Filters

Department of Chemical Engineering and Biotechnology, West C-Jonathan D. Cooper, Lynn F. Gladden, Andrew J. Sederman
Johnson Matthey Technology Centre, Blount's Court, Sonning C-Andrew P.E. York
  • Technical Paper
  • 2019-01-2286
Published 2019-12-19 by SAE International in United States
Magnetic resonance imaging (MRI) has been used to investigate gas flow in diesel and gasoline particulate filters, exploring gas flow both within the channels and also at the entrance and exit of the filters (expansion and contraction effects). The latter measurement can be used to measure turbulent diffusivity in the filter bulk flow characteristics, and therefore estimate the importance of entrance and exit effects in contributing to overall filter back pressure as the filter properties and/or exhaust flow changes (i.e. with Reynolds number). The former measurement gives information that can be used to evaluate filter performance, in particular with respect to filtration efficiency, and examples will be shown from our measurements on diesel filter systems.
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Diamond Technology Enables Low-Cost Medical Imaging

  • Magazine Article
  • TBMG-35435
Published 2019-11-01 by Tech Briefs Media Group in United States

Magnetic resonance imaging (MRI) machines are employed to locate cancerous tumors and aid in the development of treatment plans, while nuclear magnetic resonance (NMR) machines are used to examine the atomic-scale structure and chemistry of drug compounds and other molecules. Diamonds are the key to a technique that could provide a very-low-cost alternative to these expensive medical imaging and drug discovery devices.

3D Printing of Magnetic Liquid Droplets

  • Magazine Article
  • TBMG-35260
Published 2019-10-01 by Tech Briefs Media Group in United States

Systems such as magnetic data storage devices and MRI body scan machines rely on magnets made from solid materials. Now, using a modified 3D printer, scientists have made magnetic devices from liquids.

Magnetic Metamaterial Amplifies MRI

  • Magazine Article
  • TBMG-35120
Published 2019-09-01 by Tech Briefs Media Group in United States

Magnetic resonance imaging (MRI) uses magnetic fields and radio waves to create images of organs and tissues in the human body, helping doctors diagnose potential problems or diseases. Doctors use MRI to identify abnormalities or diseases in vital organs as well as many other types of body tissue, including the spinal cord and joints.

The ‘Relativity’ of High Q Capacitors

  • Magazine Article
  • TBMG-34557
Published 2019-06-01 by Tech Briefs Media Group in United States

For many high-power RF applications, the “Q factor” of embedded capacitors is one of the most important characteristics in the design of circuits. This includes products such as cellular/telecom equipment, MRI coils, plasma generators, lasers, and other medical, military, and industrial electronics.

MRI Sensor Can Image Activity Deep Within the Brain

  • Magazine Article
  • TBMG-34430
Published 2019-05-01 by Tech Briefs Media Group in United States

A new way to image calcium activity is based on magnetic resonance imaging (MRI) and allows them researchers to peer much deeper into the brain. Using this technique, they can track signaling processes inside the neurons of living animals, enabling them to link neural activity with specific behaviors.

Algorithm Enables Faster Analysis of Medical Images

  • Magazine Article
  • TBMG-33386
Published 2018-12-01 by Tech Briefs Media Group in United States

Medical image registration is a common technique that involves overlaying two images, such as magnetic resonance imaging (MRI) scans, to compare and analyze anatomical differences in great detail. If a patient has a brain tumor, for instance, doctors can overlap a brain scan from several months ago onto a more recent scan to analyze small changes in the tumor's progress.

Simulations Address Delays in MRI Breast Imaging

  • Magazine Article
  • TBMG-33253
Published 2018-11-01 by Tech Briefs Media Group in United States

Without a way to prove that a new MRI technique is safe for all women, clinical MRIs haven't been able to keep pace with the latest advances in MRI research. More informative cancer detection is possible with stronger magnetic fields that also, unfortunately, increase the risk of tissue heating during a screening.