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Application of a Dedicated Surface Coil in Dental MRI Provides Superior Image Quality in Comparison with a Standard Coil

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Abstract

Purpose

Purpose of our research was the evaluation of a dedicated dental surface coil in comparison with a standard head and neck coil for the improvement of dental magnetic resonance imaging (MRI).

Materials and Methods

Axial T1-weighted spin echo MRI was performed by using a newly developed dental coil for MRI and a standard head and neck coil on five volunteers. In addition, MRI was implemented with dental coil on five patients. Using the Wilcoxon test, we compared the volunteers’ signal-to-noise ratio (SNR) of a variety of anatomical structures (e.g., hard tooth tissue, pulp tissue, bone, muscle tissue). Also subjective evaluation of image quality was performed on both volunteers and patients.

Results

Compared with the head and neck coil, the mean SNR was 3.5-fold higher on an average with the dental coil (range: from 2.7 [masseter muscle] to  4.6 [pulp tissue]). That difference was statistically significant for all evaluated structures. The higher SNR also resulted in a superior image quality as determined by subjective evaluation.

Conclusion

Dental MRI benefits profoundly from using a dedicated dental coil.

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Authors and Affiliations

  1. Department of Neuroradiology, University of Heidelberg Medical Center, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany

    J. Gradl, M. Prager, T. Hilgenfeld, P. Bäumer, S. Heiland, M. Bendszus & S. Hähnel

  2. Heidelberg University School of Medicine, Heidelberg, Germany

    M. Höreth

  3. Department of Oral, Dental and Maxillofacial Diseases, University of Heidelberg Medical Center, Heidelberg, Germany

    T. Pfefferle

  4. NORAS MRI Products GmbH, Leibnizstrasse 4, 97204, Höchberg, Germany

    D. Gareis

Authors
  1. J. Gradl
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  2. M. Höreth
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  3. T. Pfefferle
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  4. M. Prager
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  5. T. Hilgenfeld
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  6. D. Gareis
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  7. P. Bäumer
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  8. S. Heiland
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  9. M. Bendszus
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  10. S. Hähnel
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Corresponding author

Correspondence to J. Gradl.

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The authors declare that there are no actual or potential conflicts of interest in relation to this article.

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Gradl, J., Höreth, M., Pfefferle, T. et al. Application of a Dedicated Surface Coil in Dental MRI Provides Superior Image Quality in Comparison with a Standard Coil. Clin Neuroradiol 27, 371–378 (2017). https://doi.org/10.1007/s00062-016-0500-9

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  • DOI: https://doi.org/10.1007/s00062-016-0500-9

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