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ORIGINAL ARTICLES
Published online: 2019-06-27
Submitted: 2019-05-17
Accepted: 2019-06-13
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Internal carotid and vertebral arteries diameters and their interrelationships to sex and left/right side

Goran Spasojević, Siniša Vujmilović, Zoran Vujković, Radoslav Gajanin, Slobodan Malobabić, Nenad Ponorac, Ljubiša Preradović
DOI: 10.5603/FM.a2019.0071
·
Pubmed: 31257563

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2019-06-27
Submitted: 2019-05-17
Accepted: 2019-06-13

Abstract

The available anatomical data about diameters of inflow vessels to the circle of Willis (COW) reflect various diagnostic and imaging methods used, sample sizes, levels of measurements, and lack of possible specific ethnic, regional or genetic data. Additionally, the data are often without  distinctions about  left- right or sex. Therefore, using  CT angiography (CTA) we investigated diameters of internal carotid (ICA) and vertebral (VA) arteries in 70  adult persons (28 - 75 years) of both sexes (34 males and 36 females),  at predefined cervical parts of ICA (2 cm above carotid bifurcation) and of VA (5 mm before VA penetrated the dura). Sex differences were expressed as highly significant larger diameters  of left VA (LVA)  in males (3.49 mm) than in females (3.00 mm), and as significantly larger diameters of right  VA (RVA) in males (3.20 mm) than in females (2.82 mm), as well as of  right ICA (RICA) diameters in males (5.04 mm) than in females (4.56 mm), but without such difference for left ICA (LICA) between males (4.82 mm) and  females (4.60 mm). Intrasex  (in males or in females)  left- right differences of ICA and VA diameters were not significant. Significant positive correlations were found in females between RICA and RVA, and in males between RICA and LICA. Calculated mean sum of ipsilateral diameters of right arteries (RAA= RICA + RVA) was in males 8.25 mm, in females 7.38 mm, and of left arteries (LAA= LICA + LVA) was in males 8.31, and in females 7.60 mm, without statistically significant difference between right (RAA) and left arteries (LAA), neither in males, nor in females. Statistically highly significant larger sums of diameters were in males than in females for both, right (RAA) and  left (LAA) arteries. Our findings, as the first data about diameters of ICA and VA systematically obtained  by CTA in the population of western Balkans, suggest that in the studies of these diameters is absolutely necessary to analyze separately the data for sex, and to use defined standard levels.

Abstract

The available anatomical data about diameters of inflow vessels to the circle of Willis (COW) reflect various diagnostic and imaging methods used, sample sizes, levels of measurements, and lack of possible specific ethnic, regional or genetic data. Additionally, the data are often without  distinctions about  left- right or sex. Therefore, using  CT angiography (CTA) we investigated diameters of internal carotid (ICA) and vertebral (VA) arteries in 70  adult persons (28 - 75 years) of both sexes (34 males and 36 females),  at predefined cervical parts of ICA (2 cm above carotid bifurcation) and of VA (5 mm before VA penetrated the dura). Sex differences were expressed as highly significant larger diameters  of left VA (LVA)  in males (3.49 mm) than in females (3.00 mm), and as significantly larger diameters of right  VA (RVA) in males (3.20 mm) than in females (2.82 mm), as well as of  right ICA (RICA) diameters in males (5.04 mm) than in females (4.56 mm), but without such difference for left ICA (LICA) between males (4.82 mm) and  females (4.60 mm). Intrasex  (in males or in females)  left- right differences of ICA and VA diameters were not significant. Significant positive correlations were found in females between RICA and RVA, and in males between RICA and LICA. Calculated mean sum of ipsilateral diameters of right arteries (RAA= RICA + RVA) was in males 8.25 mm, in females 7.38 mm, and of left arteries (LAA= LICA + LVA) was in males 8.31, and in females 7.60 mm, without statistically significant difference between right (RAA) and left arteries (LAA), neither in males, nor in females. Statistically highly significant larger sums of diameters were in males than in females for both, right (RAA) and  left (LAA) arteries. Our findings, as the first data about diameters of ICA and VA systematically obtained  by CTA in the population of western Balkans, suggest that in the studies of these diameters is absolutely necessary to analyze separately the data for sex, and to use defined standard levels.

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Keywords

internal carotid; vertebral artery; diameters; left-right differences, sex differences

About this article
Title

Internal carotid and vertebral arteries diameters and their interrelationships to sex and left/right side

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2019-06-27

DOI

10.5603/FM.a2019.0071

Pubmed

31257563

Keywords

internal carotid
vertebral artery
diameters
left-right differences
sex differences

Authors

Goran Spasojević
Siniša Vujmilović
Zoran Vujković
Radoslav Gajanin
Slobodan Malobabić
Nenad Ponorac
Ljubiša Preradović

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