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Abstract #3271

Neuroplasticity in patients with post surgical olfactory dysfunction  after olfactory training, assessed with fMRI.

Francisco García-Huidobro1, Cristian Montalba2,3,4, Andrés Rosesbaum1, Mariana Zurita5, David Jofré1, Sergio Uribe2,3,4, Marcelo Andia2,3,4, Pablo Villanueva6, Claudio Callejas1, Claudia González1, and Cristian Montalba2

1Otorhinolaryngology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile, 2Biomedical Imaging Center, Pontificia Universidad Católica de Chile, Santiago, Chile, 3Radiology Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile, 4Millennium Nucleus for Cardiovascular Magnetic Resonance, Santiago, Chile, 5Institute of Cognitive Neuroscience., University College London, London, UK., London, United Kingdom, 6Neurosurgery Department, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile

We evaluated the effect of olfactory training in olfactory pathway brain areas in subjects with olfactory dysfunction after transsphenoidal surgery for pituitary tumors. For this purpose, we compare 2 groups of subjects, one with olfactory training, and a second without training. All of them underwent with an fMRI block designed with eucalyptus odor. An olfactory test were measured in all subjects. The subjects with olfactory training showed a clinical improvement and more activations of compensatory olfactory central brain areas, in comparison with subjects without olfactory training, that they did not show a clinical improvement and activated less compensatory olfactory areas.

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