title: Arterial head vascularization cartographies of normal metencephalic dogs using magnetic resonance angiography.
abstract: The aim of our study was to establish head arterial cartographies-useful for the diagnosis of brain diseases leading to cerebral vascular modifications-by means of magnetic resonance angiography (MRA). Casts of the arterial vascular brain system were used to corroborate the MRA results as they can be easily rotated in nonvirtual three-dimensions and give an accurate view of the arteries calibre and origin. Two types of 3T MRA images were used: three-dimensional fast low-angle shot (3D-FLASH) acquisition sequenced every 20 s, paired with injection of a paramagnetic contrast medium, and three-dimensional time-of-flight (3D-TOF) acquisition sequenced every 300 s. 3D-FLASH acquisition gives very accurate images of the cerebral arteries and veins, but must be used with care in debilitated animals. 3D-TOF acquisition is less accurate and gives only images of the main cerebral arteries without showing the venous system. It is, however, a viable diagnostic method for monitoring vascular lesions (e.g., cerebral hemorrhages).
authors.affiliation: Department of Morphology and Pathology, Faculty of Veterinary Medicine, University of Liege, Belgium. ojacqmot@ulg.ac.be
authors.forename: Olivier D
authors.initials: OD
authors.lastname: Jacqmot
authors.forename: Frederic R
authors.initials: FR
authors.lastname: Snaps
authors.forename: Nathalie M
authors.initials: NM
authors.lastname: Maquet
authors.forename: Marie Pierre A
authors.initials: MP
authors.lastname: Heinen
authors.forename: Annick E
authors.initials: AE
authors.lastname: Gabriel
mesh_terms: D000818:Animals; D001921:Brain / Q000098:blood supply*; D002536:Cerebral Arteries / Q000033:anatomy & histology*; D002550:Cerebral Veins / Q000033:anatomy & histology; D003287:Contrast Media; D016319:Corrosion Casting; D004285:Dogs; D005260:Female; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography; D008297:Male; D009942:Organometallic Compounds; D012016:Reference Values
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; C090600:gadobutrol