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Folia Morphol (Warsz). 2019 Jul 1. doi: 10.5603/FM.a2019.0071. [Epub ahead of print]

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

Author information

1
University of Banja Luka ,Faculty of Medicine , Department of Anatomy, Save Mrkalja 14, 7800 Banja Luka Banja Luka, Bosnia and Herzegovina. goraspas@yahoo.com.
2
University of Banja Luka, Faculty of Medicine ,Department of Radiology , University Clinical Center of Republic Srpska, Dvanest beba bb, 78000 Banja Luka, Bosnia and Herzegovina.
3
University of Banja Luka , Faculty of Medicine, Neurology Clinic, University Clinical Center of Republic Srpska, Dvanest beba bb, 78000 Banja Luka, Bosnia and Herzegovina.
4
University of Banja Luka , Faculty of Medicine , Department of Pathology, University Clinical center of Republic of Srpska, Dvanaest beba bb, 78000 Banja Luka, Bosnia and Herzegovina.
5
University of Belgrade ,Faculty of Medicine , Institute of Anatomy Dr Niko Miljanić, Dr Subotića 4, 11000 Belgrade, Serbia.
6
University of Banja Luka ,Faculty of Medicine , Department of Physiology, Save Mrkalja 14, 78000 Banja Luka, Bosnia and Herzegovina.
7
University of Banja Luka , Faculty of Medicine ,Informatic in Medicine, Save Mrkalja 14, 78000 Banja Luka, Bosnia and Herzegovina.

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.

KEYWORDS:

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

PMID:
31257563
DOI:
10.5603/FM.a2019.0071
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