Improved spatial harmonic selection for SMASH image reconstructions

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

    Research output: Contribution to journalArticlepeer-review

    Abstract

    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
    Volume46
    Issue number4
    DOIs
    StatePublished - 2001

    Keywords

    • Coil arrays
    • Parallel MRI
    • Rapid imaging
    • SMASH

    ASJC Scopus subject areas

    • Radiology Nuclear Medicine and imaging

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