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Neuroradiology

, Volume 45, Issue 8, pp 532–535 | Cite as

Three-dimensional white matter tractography by diffusion tensor imaging in ischaemic stroke involving the corticospinal tract

  • A. KunimatsuEmail author
  • S. Aoki
  • Y. Masutani
  • O. Abe
  • H. Mori
  • K. Ohtomo
Diagnostic Neuroradiology

Abstract

Diffusion tensor MR imaging (DTI) provides information on diffusion anisotropy, which can be expressed with three-dimensional (3D) white matter tractography. We used 3D white matter tractography to show the corticospinal tract in eight patients with acute or early subacute ischaemic stroke involving the posterior limb of the internal capsule or corona radiata and to assess involvement of the tract. Infarcts and the tract were shown simultaneously, providing information on their spatial relationships. In five of the eight patients, 3D fibre tract maps showed the corticospinal tract in close proximity to the infarct but not to pass through it. All these patients recovered well, with maximum improvement from the lowest score on manual muscle testing (MMT) up to the full score through rehabilitation. In the other three patients the corticospinal tract was shown running through the infarct; reduction in MMT did not necessarily improve favourably or last longer, other than in one patient. As 3D white matter tractography can show spatial relationships between the corticospinal tract and an infarct, it might be helpful in prognosis of gross motor function.

Keywords

Brain infarcts Magnetic resonance imaging Diffusion tensor imaging Nerve fibres Tractography 

Notes

Acknowledgements

We thank K. Ino and Y. Satake for technical advice on image processing.

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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • A. Kunimatsu
    • 1
    Email author
  • S. Aoki
    • 1
  • Y. Masutani
    • 1
  • O. Abe
    • 1
  • H. Mori
    • 1
  • K. Ohtomo
    • 1
  1. 1.Department of Radiology, Graduate School of MedicineTokyo UniversityTokyo Japan

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