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Diffusion tensor imaging and tractography of the median nerve in carpal tunnel syndrome: preliminary results

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Abstract

The purpose was to demonstrate the feasibility of in vivo diffusion tensor imaging (DTI) and tractography of the human median nerve with a 1.5-T MR scanner and to assess potential differences in diffusion between healthy volunteers and patients suffering from carpal tunnel syndrome. The median nerve was examined in 13 patients and 13 healthy volunteers with MR DTI and tractography using a 1.5-T MRI scanner with a dedicated wrist coil. T1-weighted images were performed for anatomical correlation. Mean fractional anisotropy (FA) and mean apparent diffusion coefficient (ADC) values were quantified in the median nerve on tractography images. In all subjects, the nerve orientation and course could be detected with tractography. Mean FA values were significantly lower in patients (p=0.03). However, no statistically significant differences were found for mean ADC values. In vivo assessment of the median nerve in the carpal tunnel using DTI with tractography on a 1.5-T MRI scanner is possible. Microstructural parameters can be easily obtained from tractography images. A significant decrease of mean FA values was found in patients suffering from chronic compression of the median nerve. Further investigations are necessary to determine if mean FA values may be correlated with the severity of nerve entrapment.

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Acknowledgments

The authors would like to thank the department of Dr. J.F. Hurtevent, MD, PhD, for his help in the electrophysiological assessment of all subjects in this study.

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Authors and Affiliations

  1. Service de Radiologie Ostéoarticulaire, Hôpital Roger Salengro, CHRU de Lille, 59037, France

    C. Khalil, C. Hancart, V. Le Thuc & A. Cotten

  2. Clinique d’ Orthopédie, Hôpital Roger Salengro, CHRU de Lille, France

    C. Chantelot

  3. Philips Medical Systems, Suresnes, France

    D. Chechin

Authors
  1. C. Khalil
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  2. C. Hancart
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  3. V. Le Thuc
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  4. C. Chantelot
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  5. D. Chechin
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  6. A. Cotten
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Correspondence to C. Khalil.

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Khalil, C., Hancart, C., Le Thuc, V. et al. Diffusion tensor imaging and tractography of the median nerve in carpal tunnel syndrome: preliminary results. Eur Radiol 18, 2283–2291 (2008). https://doi.org/10.1007/s00330-008-0971-4

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  • DOI: https://doi.org/10.1007/s00330-008-0971-4

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