Phase-cycled simultaneous multislice balanced SSFP imaging with CAIPIRINHA for efficient banding reduction

Yi Wang, Xingfeng Shao, Thomas Martin, Steen Moeller, Essa Yacoub, Danny J.J. Wang

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Purpose: To present a time-efficient technique for banding reduction in balanced steady-state free precession (bSSFP) imaging using phase-cycled simultaneous multislice (SMS) acquisition with CAIPIRINHA (controlled aliasing in parallel imaging results in higher acceleration). Theory: The proposed technique exploits the inherent phase modulation of SMS imaging with CAIPIRINHA to acquire multiple phase-cycled images, which can be combined for efficient banding reduction within the same scan time of a single-band bSSFP scan. Methods: Bloch equation simulation, phantom and in vivo brain, abdominal and cardiac imaging experiments were performed on healthy volunteers at 3T using multi-channel head and body array coils with SMS acceleration factors of two to four. The performance of banding reduction was quantitatively evaluated based on the percent ripple of signal distribution and signal-to-noise ratio (SNR) efficiency in both phantom and human studies. Results: The banding artifact was successfully removed or suppressed using phase-cycled SMS bSSFP imaging across SMS factors of two to four. The performance of banding reduction improved with higher SMS factors along with increased SNR efficiency. Conclusion: Phase-cycled SMS bSSFP with CAIPIRINHA is a promising technique for efficient band reduction in bSSFP without prolonged scan time. Further evaluation of this technique in clinical applications is warranted. Magn Reson Med 76:1764–1774, 2016.

Original languageEnglish (US)
Pages (from-to)1764-1774
Number of pages11
JournalMagnetic resonance in medicine
Volume76
Issue number6
DOIs
StatePublished - Dec 1 2016

Bibliographical note

Publisher Copyright:
© 2015 International Society for Magnetic Resonance in Medicine

Keywords

  • balanced steady-state free precession (bSSFP)
  • banding reduction
  • controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA)
  • simultaneous multi-slice (SMS)

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