Abstract
BackgroundThe planum temporale (PT) is well known for its classic “pie-shaped” morphology. The aim of this study is to create a taxonomy of PT morphological features to improve its sometimes difficult identification and differentiation from surrounding structures.Material and methodsA total of 50 normal, high-resolution T1-weighted brain MRIs (100 hemispheres) were obtained from the Open Access Series of Imaging Studies (OASIS) repository. Ages ranged from 18 to 57 years.MethodsA 3D cortical surface mesh (grey matter) was generated using neuroimaging software. The PT was isolated based on pre-defined criteria and stratified into different classifications. Quantitative measurements were also taken.ResultsA total of four PT configurations were identified: (1) Pie-shaped [45%], 508.8 mm2; (2) Trapezoid-shaped [27%], 540.4 mm2, (3) Rectangular-shaped [19%], 477.7 mm2; and (4) Amorphous/none [9%], not calculable. The trapezoid-shaped PT category occurred significantly more often in females.ConclusionsThe proposed classification is the first step in creating a comprehensive.
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