Neurological Surgery No Shinkei Geka Volume 28, Issue 11 (November 2000)

The Limitations of Three-Dimensional CT Angiography (3D-CTA) in the Diagnosis of Cerebral Aneurysms Toshihiro YASUI 1 , Hiroshige KISHI 1 , Masaki KOMIYAMA 1 , Yoshiyasu IWAI 1 , Kazuhiro YAMANAKA 1 , Misao NISHIKAWA 1 , Hideki NAKAJIMA 1 , Toshie MORIKAWA 1 1Department of Neurosurgery, Osaka City General Hospital Keyword: cerebral aneurysm , digital subtraction angiography , surgery , three-dimensional CT angiography pp.975-981
Published Date 2000/11/10
  • Abstract
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Object: The purpose of this study is to show some limitations of 3D-CTA to diagnose cerebral aneu-rysms.

Methods: Sixteen saccular aneurysms less than 10mm in diameter were included. Large and complicated aneurysms were excluded.

Results: Although information about perforating arteries from the posterior cerebral artery is very im-portant for sugery of basilar bifurcation aneurysms, 3D-CTA could not delineate the perforating arteries. A small posteior communicating artery (Pcom.A.) was not detected, and it was very difficult to differenti-ate infundibular dilatation of the Pcom. A. from an aneurysm. A small aneurysm of the distal middle cere-bral artery could not be detected. Flow direction can not be determined by 3D-CTA, and nor could the side of the neck of the anterior communicating artery aneurysm be determined. Fenestration of the anterior communicating artery and the origin of the triple anterior cerebral artery were both misdiagnosed as anter-ior communicating artery aneurysms.

Conclusion: It is premature to consider 3D-CTA as a replacement for conventional angiography.

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Neurological Surgery 脳神経外科
28巻11号 (2000年11月)
電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院