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The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery

(1) Background: The normal A1 segment of the anterior cerebral artery (ACA) has a supraoptic course. The proximal infraoptic course of an A1 segment leaving the internal carotid artery (ICA) near the origin of the ophthalmic artery is a rare possibility. This study aimed to determine the prevalence...

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Autores principales: Mincă, Dragoş Ionuţ, Rusu, Mugurel Constantin, Rădoi, Petrinel Mugurel, Vrapciu, Alexandra Diana, Hostiuc, Sorin, Toader, Corneliu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9498761/
https://www.ncbi.nlm.nih.gov/pubmed/36136884
http://dx.doi.org/10.3390/tomography8050188
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author Mincă, Dragoş Ionuţ
Rusu, Mugurel Constantin
Rădoi, Petrinel Mugurel
Vrapciu, Alexandra Diana
Hostiuc, Sorin
Toader, Corneliu
author_facet Mincă, Dragoş Ionuţ
Rusu, Mugurel Constantin
Rădoi, Petrinel Mugurel
Vrapciu, Alexandra Diana
Hostiuc, Sorin
Toader, Corneliu
author_sort Mincă, Dragoş Ionuţ
collection PubMed
description (1) Background: The normal A1 segment of the anterior cerebral artery (ACA) has a supraoptic course. The proximal infraoptic course of an A1 segment leaving the internal carotid artery (ICA) near the origin of the ophthalmic artery is a rare possibility. This study aimed to determine the prevalence and detailed anatomy of infraoptic A1 segments. (2) Methods: We retrospectively studied 145 computed tomography angiograms from 92 male and 53 female cases, with ages varying from 61 to 78 y.o. (3) Results: In 21/145 cases, infraoptic or infrachiasmatic horizontal-medial courses of A1 segments that emerged distally from the ICA were found. Distal infraoptic A1 segments were bilateral in 16/145 cases and unilateral in 3/145 cases. Infrachiasmatic A1 segments were found bilaterally in 2/145 male cases. All the infraoptic/infrachiasmatic A1 segments left long ICAs with low bifurcations. In 7/34 sides with distal infraoptic or infrachiasmatic A1 segments, supracarotid courses were present. In one female, the right A1 segment had an anterior supraclinoid, supracarotid and infraoptic course. In two female cases with a bilateral distal infraoptic A1, the segment was almost contacting the respective posterior cerebral artery. (4) Conclusions: In cases with dolicho(ectatic) ICAs, the A1 segments could have infraoptic and supracarotid courses the neurosurgeons should be aware of.
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spelling pubmed-94987612022-09-23 The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery Mincă, Dragoş Ionuţ Rusu, Mugurel Constantin Rădoi, Petrinel Mugurel Vrapciu, Alexandra Diana Hostiuc, Sorin Toader, Corneliu Tomography Article (1) Background: The normal A1 segment of the anterior cerebral artery (ACA) has a supraoptic course. The proximal infraoptic course of an A1 segment leaving the internal carotid artery (ICA) near the origin of the ophthalmic artery is a rare possibility. This study aimed to determine the prevalence and detailed anatomy of infraoptic A1 segments. (2) Methods: We retrospectively studied 145 computed tomography angiograms from 92 male and 53 female cases, with ages varying from 61 to 78 y.o. (3) Results: In 21/145 cases, infraoptic or infrachiasmatic horizontal-medial courses of A1 segments that emerged distally from the ICA were found. Distal infraoptic A1 segments were bilateral in 16/145 cases and unilateral in 3/145 cases. Infrachiasmatic A1 segments were found bilaterally in 2/145 male cases. All the infraoptic/infrachiasmatic A1 segments left long ICAs with low bifurcations. In 7/34 sides with distal infraoptic or infrachiasmatic A1 segments, supracarotid courses were present. In one female, the right A1 segment had an anterior supraclinoid, supracarotid and infraoptic course. In two female cases with a bilateral distal infraoptic A1, the segment was almost contacting the respective posterior cerebral artery. (4) Conclusions: In cases with dolicho(ectatic) ICAs, the A1 segments could have infraoptic and supracarotid courses the neurosurgeons should be aware of. MDPI 2022-09-06 /pmc/articles/PMC9498761/ /pubmed/36136884 http://dx.doi.org/10.3390/tomography8050188 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mincă, Dragoş Ionuţ
Rusu, Mugurel Constantin
Rădoi, Petrinel Mugurel
Vrapciu, Alexandra Diana
Hostiuc, Sorin
Toader, Corneliu
The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery
title The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery
title_full The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery
title_fullStr The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery
title_full_unstemmed The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery
title_short The Infraoptic or Infrachiasmatic Course of the Anterior Cerebral Artery Emerging an Elongated Internal Carotid Artery
title_sort infraoptic or infrachiasmatic course of the anterior cerebral artery emerging an elongated internal carotid artery
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9498761/
https://www.ncbi.nlm.nih.gov/pubmed/36136884
http://dx.doi.org/10.3390/tomography8050188
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