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Interleaved pulsed MAMBA: a new parallel slice imaging method.

Martyn N J Paley1, Kuan J Lee, James M Wild

  • 1Section of Academic Radiology, University of Sheffield, Royal Hallamshire Hospital, Sheffield, UK. m.n.paley@shef.ac.uk

Magnetic Resonance in Medicine
|December 5, 2002
PubMed
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A novel interleaved pulsed B(0) field coil method, known as interleaved multiple acquisition micro B(0) array (MAMBA), enables parallel slice acquisition. This technique promises faster volumetric MRI studies without complex encoding methods.

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Coil Design
  • Physics

Background:

  • Current MRI techniques face limitations in rapid volumetric data acquisition.
  • Simultaneous multi-slice imaging is crucial for reducing scan times in clinical and research settings.

Purpose of the Study:

  • To introduce and validate a novel method for parallel slice acquisition using interleaved pulsed B(0) field coils.
  • To demonstrate the feasibility of the interleaved multiple acquisition micro B(0) array (MAMBA) technique for accelerated MRI.

Main Methods:

  • Simulations using the Biot-Savart law to optimize coil designs.
  • Construction and testing of a six-step interleaved coil on a 0.17 T MRI system.
  • Scaling up the coil design for a 1.5 T whole-body MRI system and acquiring volunteer scans.

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Main Results:

  • Simulated coil designs showed good agreement with measured field steps.
  • Volunteer scans demonstrated successful acquisition from multiple field steps on a 1.5 T system.
  • Simultaneous imaging from two field steps was achieved with no frequency encode aliasing.

Conclusions:

  • The one-dimensional interleaved pulsed MAMBA technique enables simultaneous slice acquisition for rapid volumetric studies.
  • This method offers an alternative to multiple shot Hadamard encoding for accelerated MRI.
  • Future extensions to 2D and 3D coil designs could provide full spatial coverage and ultra-rapid data acquisition.