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Whole-body simultaneous positron emission tomography (PET)-MR: optimization and adaptation of MRI sequences

Kathryn J Fowler1, Jon McConathy, Vamsi R Narra

  • 1Department of Radiology, Washington University, St. Louis, Missouri, USA.

Journal of Magnetic Resonance Imaging : JMRI
|January 18, 2014
PubMed

Insights

This study explores challenges in integrating magnetic resonance imaging (MRI) with positron emission tomography (PET)/MR hybrid systems. Adjusting MRI sequences is crucial for effective attenuation correction and optimized fused imaging results.

Area of Science:

  • Medical Imaging
  • Hybrid Modalities
  • Radiophysics

Background:

  • Hybrid imaging combines modalities for enhanced diagnostic capabilities.
  • Positron Emission Tomography (PET)/Magnetic Resonance Imaging (MRI) is an emerging hybrid technology.
  • Integrating PET and MRI presents unique technical challenges.

Purpose of the Study:

  • To outline the challenges of incorporating MRI into simultaneous PET/MR systems.
  • To discuss the impact of these challenges on key imaging processes.
  • To highlight the need for MR sequence optimization in PET/MR.

Main Methods:

  • Review of technical considerations for PET/MR integration.
  • Analysis of MRI sequence modifications for hybrid imaging.
  • Discussion of attenuation correction strategies in PET/MR.

Main Results:

  • Incorporating MRI into PET/MR poses challenges for attenuation correction.
  • Specific adjustments to MRI sequences are required for optimal image quality.
  • Protocol development for simultaneous PET/MR needs careful consideration of MRI parameters.

Conclusions:

  • Successful implementation of PET/MR requires addressing MRI-related challenges.
  • Optimized MRI sequences are essential for accurate PET data and fused images.
  • Further research into PET/MR protocol development is warranted.
Keywords:
MRIPET/MRmMRoncologywhole-body imaging

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