## 5 Conclusions  
The incidence of UE-V2 variation in Oman subjects is comparatively higher than that reported in other Asian populations. An anomalous origin from the right common carotid artery and unusual entry at the third cervical vertebra were observed. Additionally, the incidence of these variations occurs without any sex or side differences. The baseline data of VA variations reported may be clinically important for the pre-surgical planning of cervical surgeries and successful outcomes. Conceptualization, E.A.-A. and S.R.S. ; methodology, E.A.-A., F.A.H., and B.A.Y. ; validation, E.A.-A. and F.A.H. ; formal analysis, S.R.S. and B.A.Y. ; investigation, F.A.H. and E.A.-A. ; resources, E.A.-A. and F.A.H. ; data curation, E.A.-A., F.A.H., B.A.Y. and S.R. [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON], [PERSON]; [PERSON]; [PERSON] [PERSON] Study on the correlation of vertebral artery dominance, basilar artery curvature and posterior circulation infarction. _Acta Neurol. Belg._**2016**, _116_, 287-293. [CrossRef] [PubMed]
* [PERSON] et al. (2018) [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] A systematic classification of the vertebral artery variable origin: Clinical and surgical implications. _Surg. Radiol. Anat._**2018**, _40_, 779-797. [CrossRef] [PubMed]
* [PERSON] et al. (1999) [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON] Anomalous origin of the right vertebral artery: Review of the literature and case report of right vertebral artery origin distal to the left subclavian artery. _AJNR Am. J. Neuoradiol._**1999**, _20_, 1318-1321. * [PERSON] (2021) [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] Anomalous origin of right vertebral artery from right common carotid artery. _Radil. Rev._**2021**, _16_, 1574-1579. [CrossRef]
* [PERSON] et al. (2006) [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] Anatomical variations of the V2 segment of the vertebral artery. _Neurosurgery_**2006**, _59_, ONS20-ONS24. [CrossRef]
* [PERSON] et al. (2008) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Analysis of anatomical variations of bone and vascular structures around the posterior aitantal arch using three-dimensional computed tomography angiography. _J. Neurosurg. Spine_**2008**, \(8\), 230-236. [CrossRef]
* [PERSON] et al. (2014) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON] Vertebral artery variations and osseous anomaly at the C1-2 level diagnosed by 3D CT angiography in normal subjects. _Neuroradiology_**2014**, _56_, 843-849. [CrossRef]
* [PERSON] et al. (2016) [PERSON]; [PERSON]; [PERSON]; [PERSON] Quantitative analysis of unusual entrance of the vertebral artery into the cervical foramen (V2 segment) and its clinical implications. _Eur. Spine J._**2016**, _25_, 4188-4194. [CrossRef]
* [PERSON] et al. (2022) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Entrance and origin of the extracranial vertebral artery found on computed tomography angiography. _Sci. Rep._**2022**, _12_, 15274. [CrossRef]
* [PERSON] et al. (2021) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON], [PERSON] Anatomical Variations of the Vertebral Artery: Analysis by Three-Dimensional Computed Tomography Angiography in Chinese Population. _Orthop. Surg._**2021**, _13_, 1556-1562. [CrossRef] [PubMed]
* [PERSON] et al. (2009) [PERSON]; [PERSON]; [PERSON]; [PERSON] Injury of an aberrant vertebral artery during a routine competency: A case report and literature review. _Spinal Cord_**2009**, _47_, 773-775. [CrossRef]
* [PERSON] et al. (2021) [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON] Vertebral artery hypoplasia as an independent risk factor of posterior circulation atherosclerosis and ischemic stroke. _Medicine_**2021**, _100_, e27280. [CrossRef]
* [PERSON] et al. (2020) [PERSON]; [PERSON]; [PERSON] Tortuous vertebral artery triggering vertebral foramen expansion and radiculopathy in a 19-year-old patient: A case report. _J. Med.