Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India

Background: The circle of Willis (CW) encircles the pituitary stalk and is considered an anastomotic vascular system that links the forebrain and hindbrain. Because morphology varies between races, it was reasonable to do research on the anatomy of the CW. The purpose of this study was to determine...
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Autor*in:	Shah Sumaya Jan [verfasserIn] Bashir Ahmad Shah [verfasserIn] Shabir Ahmad Bhat [verfasserIn] Syed Shah Faisal [verfasserIn] Sheikh Mohd Saleem [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	anterior cerebral artery cerebral arterial circle middle cerebral artery posterior cerebral artery willis' circle

Übergeordnetes Werk:	In: Current Medical Issues - Wolters Kluwer Medknow Publications, 2021, 20(2022), 1, Seite 3-9
Übergeordnetes Werk:	volume:20 ; year:2022 ; number:1 ; pages:3-9

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.4103/cmi.cmi_82_21

Katalog-ID:	DOAJ034735925

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520			\|a Background: The circle of Willis (CW) encircles the pituitary stalk and is considered an anastomotic vascular system that links the forebrain and hindbrain. Because morphology varies between races, it was reasonable to do research on the anatomy of the CW. The purpose of this study was to determine the anatomical variations in the arteries composing the CW on computed tomography (CT angiography) in the adult Kashmiri population. Materials and Methods: This was a cross-sectional descriptive study conducted to assess the structural characteristics of CW and to estimate the prevalence of anatomical variations of CW in the adult Kashmiri population among those who were permanent residents of Kashmir Valley, aged 20 years or older, and who were referred for CT angiography from the Department of Medicine or Surgery with the diagnosis of CW. Results: A total of 50 (23.1%) studied CT angiography were having the presence of any anatomical variations, while 166 (76.9%) had normal anatomical origins. Arteries forming the CW (polygon) were found to be absent among 9 (4.16%) and 5 (2.3%) had fetal origin of arteries forming the CW. Trifurcation of arteries was found among only 2 (0.9%), hypoplastic arteries were found among 34 (15.7%), and complete circles were present in 207 (95.8%) CT angiographs. Right and left internal carotid artery, right and left anterior cerebral artery, the right middle and left middle cerebral artery, and the anterior communicating artery were all present. Conclusion: Hypoplasia was more prevalent in a posterior circle, absent arteries in the anterior circulation, while accessory vessels were common in the anterior portion of the circle.
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First documented evidence from Northern India</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2022</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Background: The circle of Willis (CW) encircles the pituitary stalk and is considered an anastomotic vascular system that links the forebrain and hindbrain. Because morphology varies between races, it was reasonable to do research on the anatomy of the CW. 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author	Shah Sumaya Jan
spellingShingle	Shah Sumaya Jan misc anterior cerebral artery misc cerebral arterial circle misc middle cerebral artery misc posterior cerebral artery misc willis' circle misc Medicine misc R Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India
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topic_title	Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India anterior cerebral artery cerebral arterial circle middle cerebral artery posterior cerebral artery willis' circle
topic	misc anterior cerebral artery misc cerebral arterial circle misc middle cerebral artery misc posterior cerebral artery misc willis' circle misc Medicine misc R
topic_unstemmed	misc anterior cerebral artery misc cerebral arterial circle misc middle cerebral artery misc posterior cerebral artery misc willis' circle misc Medicine misc R
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title	Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India
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title_full	Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India
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author_browse	Shah Sumaya Jan Bashir Ahmad Shah Shabir Ahmad Bhat Syed Shah Faisal Sheikh Mohd Saleem
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title_sort	computed tomography-based angiographic evaluation of circle of willis and its variations. first documented evidence from northern india
title_auth	Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India
abstract	Background: The circle of Willis (CW) encircles the pituitary stalk and is considered an anastomotic vascular system that links the forebrain and hindbrain. Because morphology varies between races, it was reasonable to do research on the anatomy of the CW. The purpose of this study was to determine the anatomical variations in the arteries composing the CW on computed tomography (CT angiography) in the adult Kashmiri population. Materials and Methods: This was a cross-sectional descriptive study conducted to assess the structural characteristics of CW and to estimate the prevalence of anatomical variations of CW in the adult Kashmiri population among those who were permanent residents of Kashmir Valley, aged 20 years or older, and who were referred for CT angiography from the Department of Medicine or Surgery with the diagnosis of CW. Results: A total of 50 (23.1%) studied CT angiography were having the presence of any anatomical variations, while 166 (76.9%) had normal anatomical origins. Arteries forming the CW (polygon) were found to be absent among 9 (4.16%) and 5 (2.3%) had fetal origin of arteries forming the CW. Trifurcation of arteries was found among only 2 (0.9%), hypoplastic arteries were found among 34 (15.7%), and complete circles were present in 207 (95.8%) CT angiographs. Right and left internal carotid artery, right and left anterior cerebral artery, the right middle and left middle cerebral artery, and the anterior communicating artery were all present. Conclusion: Hypoplasia was more prevalent in a posterior circle, absent arteries in the anterior circulation, while accessory vessels were common in the anterior portion of the circle.
abstractGer	Background: The circle of Willis (CW) encircles the pituitary stalk and is considered an anastomotic vascular system that links the forebrain and hindbrain. Because morphology varies between races, it was reasonable to do research on the anatomy of the CW. The purpose of this study was to determine the anatomical variations in the arteries composing the CW on computed tomography (CT angiography) in the adult Kashmiri population. Materials and Methods: This was a cross-sectional descriptive study conducted to assess the structural characteristics of CW and to estimate the prevalence of anatomical variations of CW in the adult Kashmiri population among those who were permanent residents of Kashmir Valley, aged 20 years or older, and who were referred for CT angiography from the Department of Medicine or Surgery with the diagnosis of CW. Results: A total of 50 (23.1%) studied CT angiography were having the presence of any anatomical variations, while 166 (76.9%) had normal anatomical origins. Arteries forming the CW (polygon) were found to be absent among 9 (4.16%) and 5 (2.3%) had fetal origin of arteries forming the CW. Trifurcation of arteries was found among only 2 (0.9%), hypoplastic arteries were found among 34 (15.7%), and complete circles were present in 207 (95.8%) CT angiographs. Right and left internal carotid artery, right and left anterior cerebral artery, the right middle and left middle cerebral artery, and the anterior communicating artery were all present. Conclusion: Hypoplasia was more prevalent in a posterior circle, absent arteries in the anterior circulation, while accessory vessels were common in the anterior portion of the circle.
abstract_unstemmed	Background: The circle of Willis (CW) encircles the pituitary stalk and is considered an anastomotic vascular system that links the forebrain and hindbrain. Because morphology varies between races, it was reasonable to do research on the anatomy of the CW. The purpose of this study was to determine the anatomical variations in the arteries composing the CW on computed tomography (CT angiography) in the adult Kashmiri population. Materials and Methods: This was a cross-sectional descriptive study conducted to assess the structural characteristics of CW and to estimate the prevalence of anatomical variations of CW in the adult Kashmiri population among those who were permanent residents of Kashmir Valley, aged 20 years or older, and who were referred for CT angiography from the Department of Medicine or Surgery with the diagnosis of CW. Results: A total of 50 (23.1%) studied CT angiography were having the presence of any anatomical variations, while 166 (76.9%) had normal anatomical origins. Arteries forming the CW (polygon) were found to be absent among 9 (4.16%) and 5 (2.3%) had fetal origin of arteries forming the CW. Trifurcation of arteries was found among only 2 (0.9%), hypoplastic arteries were found among 34 (15.7%), and complete circles were present in 207 (95.8%) CT angiographs. Right and left internal carotid artery, right and left anterior cerebral artery, the right middle and left middle cerebral artery, and the anterior communicating artery were all present. Conclusion: Hypoplasia was more prevalent in a posterior circle, absent arteries in the anterior circulation, while accessory vessels were common in the anterior portion of the circle.
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title_short	Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India
url	https://doi.org/10.4103/cmi.cmi_82_21 https://doaj.org/article/26baebfd408d43f5aae6a592c4eb3f4c http://www.cmijournal.org/article.asp?issn=0973-4651;year=2022;volume=20;issue=1;spage=3;epage=9;aulast=Jan https://doaj.org/toc/0973-4651 https://doaj.org/toc/2666-4054
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author2	Bashir Ahmad Shah Shabir Ahmad Bhat Syed Shah Faisal Sheikh Mohd Saleem
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Computed tomography-based angiographic evaluation of circle of willis and its variations. First documented evidence from Northern India

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