{"id":"c128156c-22cd-4601-bec7-b81345dc3f01","slug":"comparison-between-ultra-high-resolution-computed-tomographic-angiography-and-conventional-computed-tomographic-angiography-in-the-visualization-of-the-subcallosal-artery","title":"Comparison between ultra-high-resolution computed tomographic angiography and conventional computed tomographic angiography in the visualization of the subcallosal artery","authors":["Yoshimichi Sato","Toshiki Endo","Shingo Kayano","Hitoshi Nemoto","Kazuki Shimada","Akira Ito","Hidenori Endo","Shunji Mugikura","Kuniyasu Niizuma","Teiji Tominaga"],"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.","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/c128156c-22cd-4601-bec7-b81345dc3f01/featured/hero-1781561923073.png","publishDate":"2021-10-19T00:00:00.000Z","doi":"10.25259/SNI_887_2021","categories":["Neurovascular","Original Article"],"fullTextUrl":"https://surgicalneurologyint.com/api/articles/c128156c-22cd-4601-bec7-b81345dc3f01/pdf"}