Dual half-echo phase correction for implementation of 3D radial SSFP at 3.0 T

Jessica Klaers, Yogesh Jashnani, Youngkyoo Jung, Ethan Brodsky, Joshua Jacobson, Richard Kijowski, Walter F. Block

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Fat/water separation methods such as fluctuating equilibrium magnetic resonance and linear combination steady-state free precession have not yet been successfully implemented at 3.0 T due to extreme limitations on the time available for spatial encoding with the increase in magnetic field strength. We present a method to utilize a three-dimensional radial sequence combined with linear combination steady-state free precession at 3.0 T to take advantage of the increased signal levels over 1.5 T and demonstrate high spatial resolution compared to Cartesian techniques. We exploit information from the two half-echoes within each pulse repetition time to correct the accumulated phase on a point-by-point basis, thereby fully aligning the phase of both half-echoes. The correction provides reduced sensitivity to static field (B0) inhomogeneity and robust fat/water separation. Resultant images in the knee joint demonstrate the necessity of such a correction, as well as the increased isotropic spatial resolution attainable at 3.0 T. Results of a clinical study comparing this sequence to conventional joint imaging sequences are included.

Original languageEnglish (US)
Pages (from-to)282-289
Number of pages8
JournalMagnetic Resonance in Medicine
Volume63
Issue number2
DOIs
StatePublished - Feb 1 2010

Keywords

  • 3.0 T
  • 3D radial
  • Fast imaging
  • Fat suppression
  • Fat/water imaging
  • Magnetic resonance
  • Musculoskeletal imaging
  • Non-cartesian
  • Steady state free precession

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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    Klaers, J., Jashnani, Y., Jung, Y., Brodsky, E., Jacobson, J., Kijowski, R., & Block, W. F. (2010). Dual half-echo phase correction for implementation of 3D radial SSFP at 3.0 T. Magnetic Resonance in Medicine, 63(2), 282-289. https://doi.org/10.1002/mrm.22284