Rapid water and lipid imaging with T2 mapping using a radial IDEAL-GRASE technique

Zhiqiang Li, Christian Graff, Arthur F. Gmitro, Scott W. Squire, Ali Bilgin, Eric K. Outwater, Maria I. Altbach

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


Three-point Dixon methods have been investigated as a means to generate water and fat images without the effects of field inhomogeneities. Recently, an iterative algorithm (IDEAL, iterative decomposition of water and fat with echo asymmetry and least squares estimation) was combined with a gradient and spin-echo acquisition strategy (IDEAL-GRASE) to provide a time-efficient method for lipid-water imaging with correction for the effects of field inhomogeneities. The method presented in this work combines IDEAL-GRASE with radial data acquisition. Radial data sampling offers robustness to motion over Cartesian trajectories as well as the possibility of generating high-resolution T2 maps in addition to the water and fat images. The radial IDEAL-GRASE technique is demonstrated in phantoms and in vivo for various applications including abdominal, pelvic, and cardiac imaging.

Original languageEnglish (US)
Pages (from-to)1415-1424
Number of pages10
JournalMagnetic Resonance in Medicine
Issue number6
StatePublished - Jun 2009


  • Chemical-shift imaging
  • Lipid-water imaging
  • Radial MRI
  • T2 mapping

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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