CT Angiography with Electrocardiographically Gated Reconstruction for Visualizing Pulsation of Intracranial Aneurysms: Identification of Aneurysmal Protuberance Presumably Associated with Wall Thinning

• Published in: American Journal of Neuroradiology Vol. 26; no. 6; pp. 1366 - 1369
• Main Authors: Hayakawa, Motoharu, Katada, Kazuhiro, Anno, Hirofumi, Imizu, Shuei, Hayashi, Junichi, Irie, Keiko, Negoro, Makoto, Kato, Yoko, Kanno, Tetsuo, Sano, Hirotoshi
• Format: Journal Article
• Language: English
• Published: Oak Brook, IL Am Soc Neuroradiology 01.06.2005; American Society of Neuroradiology
• Subjects: Adult; Aged; Aged, 80 and over; Angiography - methods; Biological and medical sciences; Cerebrospinal fluid. Spinal cord. Spinal roots. Spinal nerves; Electrocardiography; Electrodiagnosis. Electric activity recording; Female; Humans; Interventional; Intracranial Aneurysm - diagnostic imaging; Intracranial Aneurysm - pathology; Intracranial Aneurysm - physiopathology; Investigative techniques, diagnostic techniques (general aspects); Male; Medical sciences; Middle Aged; Miscellaneous. Technology; Nervous system; Neurosurgery; Pulse; Radiodiagnosis. Nmr imagery. Nmr spectrometry; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases; Tomography, X-Ray Computed; Vascular disease; Reconstruction; Intracranial; Nervous system diseases; Angiography; Radiodiagnosis; Aneurysm; Cardiovascular disease; Computerized axial tomography
• ISSN: 0195-6108; 1936-959X; 1432-1920

Electrocardiographically (ECG) gated multisection helical CT images were obtained in 23 patients with ruptured intracranial aneurysms. 4D-CTA (3D CT angiography plus phase data) images were generated by ECG-gated reconstruction. Four patients showed pulsation of an aneurysmal bleb. Clipping was performed in two of these patients, and the rupture site matched the pulsatile bleb seen in 4D-CTA.