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Parallel magnetic resonance imaging.

Ulrich Katscher1, Peter Börnert

  • 1Philips Research Laboratories, Roentgenstrasse 24-26, D-22335 Hamburg, Germany. Ulrich.Katscher@philips.com

Neurotherapeutics : the Journal of the American Society for Experimental Neurotherapeutics
|June 30, 2007
PubMed
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Parallel imaging and parallel transmission in MRI utilize coil arrays to shorten k-space trajectories. While both aim for speed, parallel imaging shortens acquisition time, and parallel transmission shortens radiofrequency pulse duration.

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Radiofrequency (RF) Pulse Technology

Background:

  • Parallel imaging and parallel transmission leverage RF coil arrays.
  • Both techniques exploit spatial sensitivity differences of array elements.
  • These methods aim to reduce k-space trajectory lengths.

Purpose of the Study:

  • To describe the fundamental concepts of parallel imaging and parallel transmission.
  • To present the current state-of-the-art for both technologies.
  • To elucidate the similarities and key differences between parallel imaging and transmission.

Main Methods:

  • Exploration of RF coil array principles.
  • Analysis of k-space trajectory manipulation in MRI.
  • Comparison of RF energy deposition versus k-space data acquisition.

Related Experiment Videos

Main Results:

  • Parallel imaging focuses on reducing MRI acquisition time.
  • Parallel transmission aims to decrease the duration of RF pulses.
  • The technologies are analogous but not reciprocal.

Conclusions:

  • Parallel imaging and parallel transmission are distinct yet related MRI advancements.
  • Understanding their differences is crucial for optimizing MRI protocols.
  • Both contribute to faster and more efficient MRI examinations.