Comparison between ultra-high-resolution computed tomographic angiography and conventional computed tomographic angiography in the visualization of the subcallosal artery

Yoshimichi Sato, Toshiki Endo, Shingo Kayano, Hitoshi Nemoto, Kazuki Shimada, Akira Ito, Hidenori Endo, Shunji Mugikura, Kuniyasu Niizuma, Teiji Tominaga

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The subcallosal artery (ScA) is a single dominant artery arising from the anterior communicating artery. Its injury causes amnesia and cognitive disturbance. The conventional computed tomographic angiography (C-CTA) is a common evaluation method of the intracranial artery. However, to image tinny perforating arteries such as the ScA is technically demanding for C-CTA. The purpose of this study is to investigate whether the ultra-high-resolution CTA (UHR-CTA) could image the ScA better than C-CTA. UHR-CTA became available in clinical practice in 2017. Its novel features are the improvement of the detector system and a small X-ray focus. Methods: Between April 2019 and May 2020, 77 and 49 patients who underwent intracranial UHR-CTA and C-CTA, respectively, were enrolled in this study. Two board-certified neurosurgeons participated as observers to identify the ScA based on UHR-CTA and C-CTA images. Results: UHR-CTA and C-CTA detected the ScA in 56–58% and 30–40% of the patients, respectively. In visualization of the ScA, UHR-CTA was better than C-CTA (P < 0.05, Fisher’s exact test). Between the two observers, the Cohen’s kappa coefficient was 0.77 for UHR-CTA and 0.78 for C-CTA. Conclusions: UHR-CTA is a simple and accessible method to evaluate intracranial vasculature. Visualization of the ScA with UHR-CTA was better than that with C-CTA. The high quality of UHR-CTA could provide useful information in the neurosurgery field.

Original languageEnglish
Article number528
JournalSurgical Neurology International
Volume12
DOIs
Publication statusPublished - 2021

Keywords

  • Anterior communicating artery
  • Conventional detector computed tomographic angiography
  • Subcallosal artery
  • Ultra-high-resolution computed tomographic angiography

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology

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