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Related Concept Videos

Magnetic Resonance Imaging01:24

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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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Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth
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Magnetic resonance elastography hardware design: a survey.

Z T H Tse1, H Janssen, A Hamed

  • 1Department of Mechanical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK. t.tse06@imperial.ac.uk

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
|June 9, 2009
PubMed
Summary
This summary is machine-generated.

Magnetic resonance elastography (MRE) measures tissue stiffness for non-invasive cancer diagnosis. This review examines MRE device designs, focusing on overcoming MR environment challenges for improved clinical applications.

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Physics

Background:

  • Magnetic Resonance Elastography (MRE) is an advanced imaging technique for quantifying tissue mechanical properties, specifically shear modulus.
  • It enables non-invasive assessment of tissue stiffness, aiding in the detection of abnormalities like tumors, particularly in deep-seated or impalpable regions.
  • Conventional palpation is limited in accessibility, highlighting the need for advanced diagnostic tools like MRE.

Purpose of the Study:

  • To review and analyze existing actuator designs for Magnetic Resonance Elastography (MRE).
  • To discuss the critical design considerations and challenges for MRE devices operating within the Magnetic Resonance (MR) environment.
  • To identify future research directions for enhancing MRE technology.

Main Methods:

  • Review of existing literature and technical reports on MRE actuator systems.
  • Analysis of different actuation principles (e.g., pneumatic, piezoelectric, electromagnetic) and their placement.
  • Evaluation of MR compatibility, vibration parameters (frequency, amplitude), design complexity, and scanner synchronization.

Main Results:

  • Multiple MRE actuator approaches exist, each with unique advantages and limitations.
  • Key design challenges include MR interference, space constraints, and precise synchronization with MR sequences.
  • Successful MRE device designs must balance performance requirements with the stringent MR environment constraints.

Conclusions:

  • Effective MRE device design is crucial for realizing its potential in non-invasive cancer diagnosis.
  • Overcoming MR compatibility and synchronization issues remains a primary focus for future MRE development.
  • Continued innovation in actuator technology will expand MRE's clinical utility.