Abstract #2037

T1-weighted imaging of the orbitofrontal cortex in individuals with dental braces using 2D FLAIR

Sander Lamballais^1,2, Piotr Wielopolski³, Aad van der Lugt³, Vincent Jaddoe^1,2,4, Mohammad Arfan Ikram^1,3,5, Tonya White^3,6, and Juan Antonio Hernández Tamames³

¹Department of Epidemiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands, ²The Generation R Study Group, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands, ³Department of Radiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands, ⁴Department of Pediatrics, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands, ⁵Department of Neurology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands, ⁶Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC University Medical Center Rotterdam, Rotterdam, Netherlands

Neuroimaging studies in (pre)adolescent populations have steadily increased in number over the last decade. However, dental braces are common amongst (pre)adolescents and introduce metal-related artifacts in the images. Excluding individuals with braces from epidemiological studies may lead to selection bias and missingness in repeated measures. To this end we configured a T₁-weighted 2D FLAIR sequence and compared it to a T₁-weighted 3D SPGR sequence. Compared to SPGR, the FLAIR sequence suffered less from metal artifacts and performed similarly in cortical reconstruction and volumetric segmentation. Thus, T₁-weighted 2D FLAIR may be a useful alternative for neuroimaging in participants with dental braces.

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