Gradient moment compensated magnetic resonance spectroscopic imaging

Dong Hyun Kim, Meng Gu, Daniel M. Spielman

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Spectroscopic imaging applications outside of the brain can suffer from artifacts due to inherent long scan times and susceptibility to motion. A fast spectroscopic imaging sequence has been devised with reduced sensitivity to motion. The sequence uses oscillating readout gradients and acquires k-space data in a spiral out-in fashion, which allows fast k-space coverage. We show that a spiral out-in readout acquisition is characterized by small gradient moments, reducing sensitivity to motion-induced artifacts. Data are acquired comparing the sequence to normal phase encoded spectroscopic imaging and conventional spiral spectroscopic imaging protocols. In addition, in vivo data are acquired from the liver, demonstrating potential usage as a multivoxel fat/water spectro-scopic imaging tool. Results indicate that in the presence of motion, ghosting effects are reduced while metabolite signal increases of approximately 10% can be achieved.

Original languageEnglish
Pages (from-to)457-461
Number of pages5
JournalMagnetic Resonance in Medicine
Volume61
Issue number2
DOIs
Publication statusPublished - 2009 Feb

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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