title: Assessment of the cortical artery using computed tomography angiography for bypass surgery in moyamoya disease.
abstract: Computed tomography angiography (CTA) is often used to assess the vascular status in moyamoya disease. The purpose of the study is to identify the characteristics of cortical arteries (M4) of moyamoya disease on CTA; the clinical significance of which is also discussed. A total of 38 hemispheric sides of 27 patients with moyamoya disease were included in this study. The number of M4 was visualized on CTA using cortical surface imaging and compared between the moyamoya disease group and the non-moyamoya disease group or the control group. Then, the clinical and radiological factors associated with the number of M4, the distribution of M4, and collateral circulation were examined. The number of M4 was lower in the moyamoya disease group than in the non-moyamoya disease group and in the control group (p < 0.05). There are few predictive clinical factors of the number of M4 except male sex. The prefrontal artery, precentral artery, central artery, and angular artery had a significantly higher prevalence in moyamoya disease (p < 0.05). The durocortical and periventricular anastomosis had a significantly higher prevalence in moyamoya disease (p < 0.05). The prevalence and distribution pattern of cortical arteries in moyamoya disease differed from that of the non-moyamoya disease group, and the distribution patterns of M4 might be influenced by collateral circulation. It is thus essential to recognize M4 to assess the recipient artery so as to ensure superficial temporal artery-middle cerebral artery bypass.
authors.affiliation: Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan.
authors.forename: Hime
authors.initials: H
authors.lastname: Suzuki
authors.affiliation: Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan. tmikami@sapmed.ac.jp.
authors.forename: Takeshi
authors.identifier: http://orcid.org/0000-0002-8608-1037
authors.initials: T
authors.lastname: Mikami
authors.affiliation: Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan.
authors.forename: Katsuya
authors.initials: K
authors.lastname: Komatsu
authors.affiliation: Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan.
authors.forename: Shouhei
authors.initials: S
authors.lastname: Noshiro
authors.affiliation: Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Miyata
authors.affiliation: Division of Radiology, Sapporo Medical University Hospital, Sapporo, Japan.
authors.forename: Toru
authors.initials: T
authors.lastname: Hirano
authors.affiliation: Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Wanibuchi
authors.affiliation: Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan.
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Mikuni
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000098:blood supply* / Q000000981:diagnostic imaging*; D002560:Cerebrovascular Circulation; D002648:Child; D002675:Child, Preschool; D002941:Circle of Willis / Q000000981:diagnostic imaging / Q000601:surgery; D000072226:Computed Tomography Angiography; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging* / Q000601:surgery*; D009072:Moyamoya Disease / Q000000981:diagnostic imaging* / Q000601:surgery*; D061330:Multidetector Computed Tomography; D015899:Tomography, Emission-Computed, Single-Photon; D014656:Vascular Surgical Procedures; D055815:Young Adult
keywords: Bypass surgery; Computed tomography angiography; Cortical artery; Moyamoya disease