Bouthillier classification of internal carotid artery segments
Citation, DOI, disclosures and article data
Citation:
Gaillard F, Hacking C, Deng F, et al. Bouthillier classification of internal carotid artery segments. Reference article, Radiopaedia.org (Accessed on 02 Nov 2024) https://doi.org/10.53347/rID-4714
rID:
4714
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Disclosures:
At the time the article was created Frank Gaillard had no recorded disclosures.
View Frank Gaillard's current disclosures
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Disclosures:
At the time the article was last revised Frank Gaillard had the following disclosures:
- Radiopaedia Australia Pty Ltd, Founder and CEO (ongoing)
- Biogen Australia Pty Ltd, Investigator-Initiated Research Grant for CAD software development in multiple sclerosis. (past)
These were assessed during peer review and were determined to not be relevant to the changes that were made.
View Frank Gaillard's current disclosures
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- Bouthillier classification of ICA segments
Alain Bouthillier et al. described a seven segment internal carotid artery classification system in 1996 1. It remains the most widely used system for describing the internal carotid artery segments.
A helpful mnemonic for remembering ICA segments is:
- C'mon Please Learn Carotid Clinical Organizing Classification
Classification
- C1: cervical segment (starts at carotid bifurcation)
- C2: petrous segment (starts at carotid canal)
- C3: lacerum segment (starts at posterior edge of foramen lacerum)
- C4: cavernous segment (starts at the superior margin of petrolingual ligament)
- C5: clinoid segment (starts at proximal dural ring / anterior clinoid process)
- C6: ophthalmic (supraclinoid) segment (starts at distal dural ring / cavernous sinus roof)
- C7: communicating (terminal) segment (starts just proximal to the origin of posterior communicating artery, ends at bifurcation into middle and anterior cerebral arteries)
See also
There are a few other classification systems including those proposed by Fischer (1938), Gibo (1981), and Lasjaunias (1984) 2.
References
- 1. Segments of the Internal Carotid Artery: A New Classification. Neurosurgery. 38(3):425-433, March 1996. Bouthillier, Alain M.D.; van Loveren, Harry R. M.D.; Keller, Jeffrey T. Ph.D.
- 2. Lasjaunias, P., and A. Santoyo-Vazquez. "Segmental agenesis of the internal carotid artery: angiographic aspects with embryological discussion." Anatomia clinica 6.2 (1984): 133-141.
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- Internal carotid artery segments (illustration)
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