Posterior fontanelle
Citation, DOI, disclosures and article data
Citation:
Lall N, Hacking C, Knipe H, et al. Posterior fontanelle. Reference article, Radiopaedia.org (Accessed on 13 Mar 2025) https://doi.org/10.53347/rID-62360
rID:
62360
Article created:
14 Aug 2018,
Neil Lall
Disclosures:
At the time the article was created Neil Lall had no recorded disclosures.
View Neil Lall's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Craig Hacking had no recorded disclosures.
View Craig Hacking's current disclosures
Revisions:
7 times, by
5 contributors -
see full revision history and disclosures
Systems:
Sections:
Synonyms:
- Occipital fontanel
- Occipital fontanelle
- Posterior fontanel
The posterior fontanelle or occipital fontanelle is the triangular soft membranous gap (fontanelle) at the junction of the lambdoid and sagittal sutures. It persists until approximately 2-3 months after birth, after which it is known as the lambda. It can be used as an additional sonographic window for performing cranial ultrasound to improve visualisation of dependently layering intraventricular haemorrhage.
References
- 1. Di Salvo DN. A new view of the neonatal brain: clinical utility of supplemental neurologic US imaging windows. (2001) Radiographics : a review publication of the Radiological Society of North America, Inc. 21 (4): 943-55. doi:10.1148/radiographics.21.4.g01jl14943 - Pubmed
- 2. Flavia Correa, Goya Enríquez, José Rosselló, Javier Lucaya, Joaquim Piqueras, Celestino Aso, Elida Vázquez, Arantxa Ortega, Alfredo Gallart. Posterior Fontanelle Sonography: An Acoustic Window into the Neonatal Brain. (2004) American Journal of Neuroradiology. 25 (7): 1274. Pubmed
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