RT Journal Article
SR Electronic
T1 The Depth of the Olfactory Sulcus Is an Indicator of Congenital Anosmia
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1911
OP 1914
DO 10.3174/ajnr.A2632
VO 32
IS 10
A1 C. Huart
A1 T. Meusel
A1 J. Gerber
A1 T. Duprez
A1 P. Rombaux
A1 T. Hummel
YR 2011
UL http://www.ajnr.org/content/32/10/1911.abstract
AB 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. ANOVAanalysis of varianceFSEfast spin-echoIAisolated anosmiaOBolfactory bulbOSolfactory sulcusOTolfactory tractPPTEplane of the posterior tangent through the eyeballsSEMstandard error of the mean