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Generating multiple contrasts using single-shot radial T1 sensitive and insensitive steady-state imaging.

Thomas Benkert1, Andreas J Bartsch2,3,4, Martin Blaimer1

  • 1Research Center Magnetic Resonance Bavaria (MRB), Würzburg, Germany.

Magnetic Resonance in Medicine
|July 1, 2014
PubMed
Summary

This study introduces an advanced radial T1 sensitive and insensitive steady-state imaging (TOSSI) technique. It enables rapid acquisition of multiple MRI contrasts from a single measurement, enhancing efficiency and diagnostic possibilities.

Keywords:
FLAIR contrastSSFPT2 contrastfast imagingradial imagingsteady-state

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Area of Science:

  • Magnetic Resonance Imaging
  • Biomedical Engineering
  • Radiology

Background:

  • Balanced steady-state free precession (bSSFP) is a common MRI technique.
  • Resolution Enhanced-T1 insensitive steady-state imaging (RE-TOSSI) offers fast T2-weighted imaging.
  • Existing methods have limitations in speed and contrast generation.

Purpose of the Study:

  • To present an extension of the TOSSI technique for improved efficiency and versatility.
  • To develop a method for acquiring multiple MRI contrasts rapidly.
  • To validate the extended TOSSI approach for clinical applications.

Main Methods:

  • Utilized a radial trajectory with view-sharing reconstruction.
  • Acquired multiple contrasts, including T2-weighting and T2/T1-weighting, from single-shot measurements.
  • Employed unequally spaced inversion pulses in a balanced steady-state free precession (bSSFP) sequence.

Main Results:

  • Demonstrated validation in brain and abdominal imaging at 3.0 Tesla.
  • Achieved comparable contrasts to RE-TOSSI, bSSFP, and turbo spin-echo in significantly less time.
  • Showcased potential clinical utility with images from a brain tumor patient.

Conclusions:

  • Radial T1 sensitive and insensitive steady-state imaging efficiently generates multiple contrasts.
  • The technique allows for rapid, single-shot acquisition of diverse image contrasts.
  • This method significantly reduces scan time while expanding imaging possibilities.