Hybrid phased array for improved internal auditory canal imaging at 3.0-T MR

Armen Kocharian, John I. Lane, Matt A. Bernstein, Chen Lin, Robert J. Witte, John Huston, Joel P. Felmlee

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Purpose: To develop and evaluate a hybrid phased array for internal auditory canal (IAC) imaging at 3.0 T. Materials and Methods: A hybrid phased array was designed and built as two circular surface receive-only coils combined with a volume transmit-receive birdcage head coil for simultaneous image acquisition. Phantom and volunteer images were obtained to assess the coil performance. Results: The phantom data show that significant signal-to-noise ratio (SNR) improvement was achieved in the region corresponding to the inner ear, i.e., by a factor of 2.5 compared to the standard head coil data. Volunteer IAC image quality was deemed superior as compared to images acquired at 3.0 T using a standard head coil. Conclusion: This hybrid array combined with three-dimensional fast spin-echo (FSE) acquisition resulted in improved high spatial resolution IAC imaging.

Original languageEnglish (US)
Pages (from-to)300-304
Number of pages5
JournalJournal of Magnetic Resonance Imaging
Issue number3
StatePublished - Sep 2002


  • Cochlear and vestibular nerves
  • Internal auditory canal
  • MRI
  • RF coils
  • Signal-to-noise-ratio

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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