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European Radiology

, Volume 14, Issue 2, pp 234–238 | Cite as

Optimization of diffusion-tensor MR imaging data acquisition parameters for brain fiber tracking using parallel imaging at 3 T

  • Shinji NaganawaEmail author
  • Tokiko Koshikawa
  • Hisashi Kawai
  • Hiroshi Fukatsu
  • Takeo Ishigaki
  • Katsuya Maruyama
  • Osamu Takizawa
Neuro

Abstract

The purpose of this study was to optimize the parameters of diffusion-tensor magnetic resonance imaging (DT MRI) for brain fiber tracking using a slice thickness of 2 mm, a resolution advantage allowed by the high signal-to-noise ratio at 3 T, combined with an 8-channel phased-array head coil. The b-factor, number of motion probing gradient (MPG) directions, and number of averages were varied, and the results of brain fiber tracking for the pyramidal tract and trigeminal nerve were compared qualitatively and quantitatively. The DT MRI data sufficient for brain fiber tracking in healthy subjects can be obtained in <2 min with a 2-mm slice thickness, 700-s/mm2 b-factor, 6 MPG directions, and no averaging (number of averages=1).

Keywords

MR Diffusion tensor Fiber tracking Tractography 

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Shinji Naganawa
    • 1
    Email author
  • Tokiko Koshikawa
    • 1
  • Hisashi Kawai
    • 1
  • Hiroshi Fukatsu
    • 1
  • Takeo Ishigaki
    • 1
  • Katsuya Maruyama
    • 2
  • Osamu Takizawa
    • 2
  1. 1.Department of RadiologyNagoya University School of MedicineNagoyaJapan
  2. 2.Siemens-Asahi Medical Technologies Ltd.Japan

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