Journal of Korean Neurosurgical Society

  • 제61권2호
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  • Pages.194-200
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  • 2018
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  • 2005-3711(pISSN)
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  • 1598-7876(eISSN)
대한신경외과학회 (The Korean Neurosurgical Society)
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C2 Segmental-Type Vertebral Artery Diagnosed Using Computed Tomographic Angiography

  • 투고 : 2017.03.31
  • 심사 : 2017.06.09
  • 발행 : 2018.03.01
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초록

Objective : Sometimes a vertebral artery (VA) enters the spinal canal via the C1-2 intervertebral space, a variation regarded as a C2 segmental-type VA. This paper describes the anatomy of the C2 segmental-type VA and reviews its clinical importance. Methods : Between March 2014 and November 2015, 3386 patients underwent computed tomographic angiography. I identified C2 segmental-type VAs, associated vascular variation, the origin of ipsilateral posterior inferior cerebellar arteries (PICAs), and the clinical symptoms associated with C2 segmental-type VAs. The origin of an ipsilateral PICA is divided into 5 types. A type 1 PICA originates from ipsilateral VAs coursing suboccipitally (IVASO), a type 2 originates from ipsilateral proximal C2 segmental-type VAs, a type 3 originates from ipsilateral distal C2 segmental-type VAs. For type 4, the PICA does not originate from an ipsilateral VA. For type 5, the PICA is the terminal end of an ipsilateral C2 segmental-type VA. Results : One hundred thirteen patients had 121 C2 segmental-type VAs; 47 were associated with an IVASO, and 74 were not. Four type 1, 13 type 2, 60 type 3, 42 type 4, and two type 5 PICAs were identified. Only one patient showed symptoms associated with a C2 segmental-type VA, being a 71-year-old man presenting with a C2 segmental-type VA infarction. Conclusion : For C2 segmental-type VAs, the ipsilateral IVASO and origin of the PICA are important for predicting the outcome of this type of VA infarction.

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참고문헌

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피인용 문헌

  1. C3 segmental vertebral artery diagnosed by computed tomography angiography vol.41, pp.9, 2019, https://doi.org/10.1007/s00276-019-02193-z
  2. Cervical myelopathy due to neurovascular compression syndrome caused by persistent first intersegmental artery: a case report vol.20, pp.1, 2018, https://doi.org/10.1186/s12883-020-01976-x
  3. Anatomical Variations of the Vertebral Artery: Analysis by Three‐Dimensional Computed Tomography Angiography in Chinese Population vol.13, pp.5, 2021, https://doi.org/10.1111/os.13047