M sign (inferior frontal gyrus)
Citation, DOI, disclosures and article data
Citation:
Gaillard F, Skalski M, Luijkx T, M sign (inferior frontal gyrus). Reference article, Radiopaedia.org (Accessed on 21 Mar 2025) https://doi.org/10.53347/rID-49414
Permalink:
rID:
49414
Article created:
Disclosures:
At the time the article was created Frank Gaillard had no recorded disclosures.
View Frank Gaillard's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Daniel J Bell had no recorded disclosures.
View Daniel J Bell's current disclosures
Revisions:
3 times, by
3 contributors -
see full revision history and disclosures
Systems:
The M sign refers to the characteristic "M" configuration of the inferior frontal gyrus, as it forms (from front to back) the pars orbitalis, pars triangularis, and, pars opercularis.
Quiz questions
References
- 1. Wagner M, Jurcoane A, Hattingen E. The U sign: tenth landmark to the central region on brain surface reformatted MR imaging. AJNR. American journal of neuroradiology. 34 (2): 323-6. doi:10.3174/ajnr.A3205 - Pubmed
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