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Citation:
Gaillard F, Worsley C, Hacking C, et al. Bracket sign (pars marginalis). Reference article, Radiopaedia.org (Accessed on 29 Mar 2025) https://doi.org/10.53347/rID-49418
The bracket sign of the pars marginalis, also known as the pars bracket sign, refers to the appearances of the superior most extent of the pars marginalis of the cingulate sulcus on axial imaging. It forms two roughly symmetric brackets, open anteriorly. The next sulcus anteriorly is the central sulcus.
It should not be confused with the bracket sign of pericallosal lipomas.
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1. Wagner M, Jurcoane A, Hattingen E. The U Sign: Tenth Landmark to the Central Region on Brain Surface Reformatted MR Imaging. AJNR Am J Neuroradiol. 2013;34(2):323-6. doi:10.3174/ajnr.A3205 - Pubmed
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