Fast parallel spiral chemical shift imaging at 3T using iterative SENSE reconstruction

Dirk Mayer, Dong Hyun Kim, Daniel M. Spielman, Roland Bammer

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Spiral chemical shift imaging (CSI) is a fast CSI technique that simultaneously encodes 1D spectral and 2D spatial information. Therefore, it potentially allows one to perform a 2D-CSI experiment in a single shot. However, for most applications, limitations on maximum gradient strength and slew rate make multiple excitations necessary in order to achieve a desired spectral bandwidth. In this work we reduce the number of spatial interleaves and, hence, the minimum total measurement time of spiral CSI by using an iterative sensitivity encoding reconstruction algorithm which utilizes complementary spatial encoding afforded by the spatially inhomogeneous sensitivity profiles of individual receiver coils. The performance of the new method was evaluated in phantom and in vivo experiments. Parallel spiral CSI produced maps of brain metabolites similar to those obtained using conventional gridding reconstruction of the fully sampled data with only a small decrease in time-normalized signal-to-noise ratio and a small increase in noise for higher acceleration factors.

Original languageEnglish
Pages (from-to)891-897
Number of pages7
JournalMagnetic Resonance in Medicine
Volume59
Issue number4
DOIs
Publication statusPublished - 2008 Apr

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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