Improved spatial harmonic selection for SMASH image reconstructions

Charles A. McKenzie, Ernest N. Yeh, Daniel K. Sodickson

Research output: Contribution to journalArticlepeer-review


The fitting of coil sensitivity functions to spatial harmonics is central to image reconstructions using the simultaneous acquisition of spatial harmonics (SMASH) technique. It has previously been shown that the selection of the set of spatial harmonics used in a SMASH reconstruction can have a noticeable effect on the quality of the reconstructed image. However, a mechanism for automatic selection of the best set of harmonics in any particular situation has not been provided. In this work, a modification to the SMASH reconstruction procedure is introduced that allows the use of a weighted average of all possible harmonics in a reconstruction. The new reconstruction procedure is shown to allow automatic selection of the spatial harmonics and substantially improve SNR for both phantom and in vivo images.

Original languageEnglish (US)
Pages (from-to)831-836
Number of pages6
JournalMagnetic resonance in medicine
Issue number4
StatePublished - 2001


  • Coil arrays
  • Parallel MRI
  • Rapid imaging

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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