Parallel imaging for NMR microscopy at 14.1 Tesla

Bradley P. Sutton, Luisa Ciobanu, Xiaozhong Zhang, Andrew Webb

Research output: Contribution to journalArticle

Abstract

Parallel imaging techniques using arrays of mutually decoupled coils have become standard on almost all clinical imaging systems. Such techniques also have great potential for high-field magnetic resonance (MR) microscopy, where measurement times are usually long and susceptibility artifacts can be severe. However, it is technically very challenging to design efficient high-frequency phased arrays for small-diameter, vertical-bore magnets, especially since standard decoupling methods, such as impedance mismatched preamplifiers, cannot be easily integrated. A four-coil phased array was constructed for microimaging at 600 MHz, and sensitivity encoding (SENSE) and generalized autocalibrating partially parallel acquisitions (GRAPPA) reconstructions of spin-echo and echo-planar images of the mouse brain were performed to reduce imaging time and susceptibility artifacts, respectively.

Original languageEnglish (US)
Pages (from-to)9-13
Number of pages5
JournalMagnetic Resonance in Medicine
Volume54
Issue number1
DOIs
StatePublished - Jul 2005

Keywords

  • Functional imaging
  • High fields
  • Microscopy
  • Parallel imaging
  • Phased arrays

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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