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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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Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...

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Simultaneous Multislice for Accelerating Diffusion MRI in Clinical Neuroradiology Protocols.

M J Hoch1, M Bruno2, D Pacione3

  • 1From the Department of Radiology (M.J.H.), University of Pennsylvania, Philadelphia, Pennsylvania.

AJNR. American Journal of Neuroradiology
|May 14, 2021
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Simultaneous multislice (SMS) accelerated diffusion MRI is clinically equivalent to standard acquisitions for diagnostic utility. This technique significantly reduces scan times for both routine diffusion imaging and diffusion tractography, enabling advanced applications.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Neuroimaging

Background:

  • Diffusion MR imaging is crucial for clinical neuroradiology.
  • Simultaneous multislice (SMS) acquisitions can accelerate these sequences.
  • This study evaluates the clinical equivalence of SMS-accelerated diffusion data.

Purpose of the Study:

  • To test if simultaneous multislice-accelerated diffusion MRI data are clinically equivalent to standard acquisitions.
  • To assess the impact of SMS acceleration on image quality, artifacts, and diagnostic utility.
  • To evaluate the clinical utility of SMS-accelerated diffusion tractography.

Main Methods:

  • Retrospective analysis of 25 patients before and after 2-slice SMS acceleration implementation.
  • Neuroradiologist evaluation of perceived quality, artifacts, and diagnostic utility.
  • Diffusion tractography in 13 patients assessed by a neurosurgeon for fidelity and utility.

Main Results:

  • SMS diffusion MRI reduced acquisition time from 141 to 45 seconds (routine) and 7.5 to 5.9 minutes (tractography).
  • SMS-accelerated diffusion was rated equivalent for diagnostic utility, despite minor perceived quality reductions.
  • Diffusion tractography using SMS was also rated clinically equivalent, with high Dice similarity coefficients for tract volumes.

Conclusions:

  • Two-slice SMS diffusion MRI is clinically equivalent for standard acquisitions and diffusion tractography.
  • SMS acceleration facilitates higher resolution diffusion imaging, essential for advanced clinical applications.
  • SMS diffusion MRI shows promise for improving efficiency and enabling advanced neuroimaging protocols.