title: Microanatomy of the subcallosal artery: an in-vivo 7 T magnetic resonance angiography study.
abstract: OBJECTIVE
  To investigate in-vivo microanatomy of the subcallosal artery branching from the anterior communicating artery (ACoA) using time-of-flight (TOF) magnetic resonance angiography (MRA) at 7 Tesla.
  
  
  METHODS
  Seventy-five subjects, including 15 healthy volunteers and 60 patients, were included in this prospective study. Three raters characterized branches from ACoA in maximum intensity projections of TOF MRA at 7 Tesla acquired with 0.22 × 0.22 × 0.41 mm(3) resolution. Furthermore, course patterns and anatomical features of the subcallosal artery (maximum diameter, length, and branching angle from ACoA) were measured.
  
  
  RESULTS
  Branches from the anterior communicating artery were visualized in 63 of 74 (85.1 %) subjects and were identified as the subcallosal artery (93.7 %) and the accessory anterior cerebral artery (6.3 %). The course of the subcallosal artery was classified into 3 groups; C-shaped (55.9 %), straight (16.9 %), and S-shaped (27.2 %). There was a significant difference between the branching angles of C-shaped and straight (p < 0.0001), between C-shaped and S-shaped (p < 0.0001), as well as between straight and S-shaped (p = 0.0113) course patterns.
  
  
  CONCLUSIONS
  High-resolution in-vivo 7 T TOF MRA can delineate the microanatomy of the subcallosal artery. Three main variants of course patterns and branching angles from ACoA could be identified.
  
  
  CONCLUSIONS
  • In-vivo 7 Tesla TOF MRA can delineate the subcallosal artery microanatomy • Three distinct course patterns of the subcallosal artery were identified • Branching angles from ACoA significantly differed between subcallosal artery course patterns.
authors.affiliation: Department of Neurosurgery, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany. Toshinori.Matsushige@uk-essen.de.|Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8551, Japan. Toshinori.Matsushige@uk-essen.de.|Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Kokereiallee 7, Building C84, Essen, 45141, Germany. Toshinori.Matsushige@uk-essen.de.
authors.forename: Toshinori
authors.initials: T
authors.lastname: Matsushige
authors.affiliation: Department of Neurosurgery, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.|Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Kokereiallee 7, Building C84, Essen, 45141, Germany.
authors.forename: Bixia
authors.initials: B
authors.lastname: Chen
authors.affiliation: Department of Neurosurgery, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.|Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Kokereiallee 7, Building C84, Essen, 45141, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Dammann
authors.affiliation: Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Kokereiallee 7, Building C84, Essen, 45141, Germany.
authors.forename: Sören
authors.initials: S
authors.lastname: Johst
authors.affiliation: Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Kokereiallee 7, Building C84, Essen, 45141, Germany.|High Field and Hybrid MR Imaging, University Hospital Essen, Hufelandstrasse 55, Essen, 45147, Germany.
authors.forename: Harald H
authors.initials: HH
authors.lastname: Quick
authors.affiliation: Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Kokereiallee 7, Building C84, Essen, 45141, Germany.|Division of Medical Physics in Radiology, German Cancer Research Center, Im Neuenheimer Feld 280, Heidelberg, 69120, Germany.
authors.forename: Mark E
authors.initials: ME
authors.lastname: Ladd
authors.affiliation: Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstrasse 55, Essen, 45147, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Forsting
authors.affiliation: Department of Neurosurgery, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Sure
authors.affiliation: Department of Neurosurgery, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.|Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Kokereiallee 7, Building C84, Essen, 45141, Germany.
authors.forename: Karsten H
authors.initials: KH
authors.lastname: Wrede
mesh_terms: D000328:Adult; D000368:Aged; D002536:Cerebral Arteries / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D017397:Prefrontal Cortex / Q000098:blood supply*; D011446:Prospective Studies; D055815:Young Adult
keywords: 7 Tesla; Anatomy; Anterior communicating artery; Subcallosal artery; TOF MRA