Journal of Cerebrovascular and Endovascular Neurosurgery

Korean Society of Cerebravascular Surgeons (대한뇌혈관외과학회)
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Geometric influence of anterior cerebral artery rotation on the formation of anterior communicating artery aneurysm

  • Sokhoeun Heng (Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine) ;
  • Sung Ho Lee (Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine) ;
  • Jin Woo Bae (Department of Neurosurgery, Inha University School of Medicine) ;
  • Young Hoon Choi (Department of Neurosurgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center) ;
  • Dong Hyun Yoo (Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine) ;
  • Kang Min Kim (Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine) ;
  • Won-Sang Cho (Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine) ;
  • Hyun-Seung Kang (Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine) ;
  • Jeong Eun Kim (Department of Neurosurgery, Seoul National University Hospital, Seoul National University College of Medicine)
  • Received : 2022.11.15
  • Accepted : 2023.01.21
  • Published : 2023.09.30
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Abstract

Objective: Several particular morphological factors that contribute to the hemodynamics of the anterior communicating artery (ACoA) have been documented, but no study has investigated the role of the degree of anterior cerebral artery (ACA) rotation on the presence of ACoA aneurysms (ACoAAs). Methods: A retrospective study of an institutional aneurysm database was performed; patients with ruptured or nonruptured ACoAAs were selected. Two sex- and age-matched control groups were identified: control Group A (nonaneurysms) and control Group B (middle cerebral artery aneurysms). Measurements of ACA rotation degree were obtained by using a three-dimensional imaging tool. Results: From 2015 to 2020, 315 patients were identified: 105 in the ACoAA group, 105 in control Group A, and 105 in control Group B. The average age at the time of presentation was 64 years, and 52.4% were female. The ACA rotation degree of the ACoAA group was significantly higher than that of control Group A (p <0.01). The A1 ratio and the A1A2 ratio of the ACoAA group were greater than those of control Group A (p <0.01 and p <0.01, respectively). The ACA rotation degree correlated insignificantly with aneurysm size in ACoAA patients (p=0.78). The ACA rotation degree in the ACoAA group was also insignificantly different from that in control B (p=0.11). Conclusions: The degree of ACA rotation was greater in the ACoAA group than in the nonaneurysm group, and it may serve as an imaging marker for ACoAA.

Keywords

Acknowledgement

This work was supported by grant No. (032021014) from the SNUH Research Fund.

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