Magnetic Resonance Imaging of Human Olfactory Dysfunction

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Abstract

Olfactory dysfunctions affect a larger portion of population (up to 15% with partial olfactory loss, and 5% with complete olfactory loss) as compared to other sensory dysfunctions (e.g. auditory or visual) and have a negative impact on the life quality. The impairment of olfactory functions may happen at each stage of the olfactory system, from epithelium to cortex. Non-invasive neuroimaging techniques such as the magnetic resonance imaging (MRI) have advanced the understanding of the advent and progress of olfactory dysfunctions in humans. The current review summarizes recent MRI studies on human olfactory dysfunction to present an updated and comprehensive picture of the structural and functional alterations in the central olfactory system as a consequence of olfactory loss and regain. Furthermore, the review also highlights recent progress on optimizing the olfactory functional MRI as well as new approaches for data processing that are promising for future clinical practice.

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Fig. 1

Change history

  • 18 October 2019

    The original version of this article unfortunately contained a mistake. The spelling of the Yoshi Akshita name was incorrect. The correct name should be Joshi Akshita The original article has been corrected.

  • 18 October 2019

    The original version of this article unfortunately contained a mistake. The spelling of the Yoshi Akshita name was incorrect. The correct name should be Joshi Akshita The original article has been corrected.

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Correspondence to Pengfei Han.

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This is one of several papers published together in Brain Topography on the ‘‘Special Issue: Current Opinions in Brain Imaging Methods and Applications".

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Han, P., Zang, Y., Akshita, J. et al. Magnetic Resonance Imaging of Human Olfactory Dysfunction. Brain Topogr 32, 987–997 (2019). https://doi.org/10.1007/s10548-019-00729-5

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Keywords

  • Olfactory dysfunction
  • MRI technique
  • Central olfactory system
  • Structure
  • Function