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The Depth of the Olfactory Sulcus Is an Indicator of Congenital Anosmia

The Depth of the Olfactory Sulcus Is an Indicator of Congenital Anosmia BACKGROUND AND PURPOSE: In congenital anosmia, the OB and OT can be aplastic or hypoplastic. In clinical routine, these are sometimes difficult to assess. We thus wanted to investigate morphologic differences of the OS in patients with IA since birth or early childhood in comparison with controls, to investigate whether there is a depth of OS that is predictive of IA. MATERIALS AND METHODS: Within the context of a 2-center study, we investigated 36 patients with IA in comparison with 70 controls. MR imaging was performed with a standard quadrature head coil (1.5T; T1- and T2-weighted spin-echo sequences were used on the coronal plane). We assessed the depth of OS in the PPTE. RESULTS: Looking at the depth of the OS in the PPTE, we found that patients with IA had a significantly smaller OS compared with controls ( P < .001). None of the healthy controls exhibited a depth of <8 mm. In patients with IA, 10 had an OS deeper than 8 mm, while 26 had an OS smaller than 8 mm. Thus, a depth of the OS less than 8 mm clearly indicates IA, with a specificity of 1 and a sensitivity of 0.72. CONCLUSIONS: In IA, the depth of the OS in the PPTE is a useful clinical indicator. Indeed, if it is ≤8 mm, it clearly indicates IA, with a specificity of 1. Abbreviations ANOVA analysis of variance FSE fast spin-echo IA isolated anosmia OB olfactory bulb OS olfactory sulcus OT olfactory tract PPTE plane of the posterior tangent through the eyeballs SEM standard error of the mean http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Neuroradiology American Journal of Neuroradiology

The Depth of the Olfactory Sulcus Is an Indicator of Congenital Anosmia

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Publisher
American Journal of Neuroradiology
Copyright
Copyright © 2011 by the American Society of Neuroradiology.
ISSN
0195-6108
eISSN
1936-959X
DOI
10.3174/ajnr.A2632
pmid
21868619
Publisher site
See Article on Publisher Site

Abstract

BACKGROUND AND PURPOSE: In congenital anosmia, the OB and OT can be aplastic or hypoplastic. In clinical routine, these are sometimes difficult to assess. We thus wanted to investigate morphologic differences of the OS in patients with IA since birth or early childhood in comparison with controls, to investigate whether there is a depth of OS that is predictive of IA. MATERIALS AND METHODS: Within the context of a 2-center study, we investigated 36 patients with IA in comparison with 70 controls. MR imaging was performed with a standard quadrature head coil (1.5T; T1- and T2-weighted spin-echo sequences were used on the coronal plane). We assessed the depth of OS in the PPTE. RESULTS: Looking at the depth of the OS in the PPTE, we found that patients with IA had a significantly smaller OS compared with controls ( P < .001). None of the healthy controls exhibited a depth of <8 mm. In patients with IA, 10 had an OS deeper than 8 mm, while 26 had an OS smaller than 8 mm. Thus, a depth of the OS less than 8 mm clearly indicates IA, with a specificity of 1 and a sensitivity of 0.72. CONCLUSIONS: In IA, the depth of the OS in the PPTE is a useful clinical indicator. Indeed, if it is ≤8 mm, it clearly indicates IA, with a specificity of 1. Abbreviations ANOVA analysis of variance FSE fast spin-echo IA isolated anosmia OB olfactory bulb OS olfactory sulcus OT olfactory tract PPTE plane of the posterior tangent through the eyeballs SEM standard error of the mean

Journal

American Journal of Neuroradiology – American Journal of Neuroradiology

Published: Nov 1, 2011

References

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