title: MR imaging of carotid webs.
abstract: OBJECTIVE
  We propose a magnetic resonance (MR) imaging protocol for the characterization of carotid web morphology, composition, and vessel wall dynamics. The purpose of this case series was to determine the feasibility of imaging carotid webs with MR imaging.
  
  
  METHODS
  Five patients diagnosed with carotid web on CT angiography were recruited to undergo a 30-min MR imaging session. MR angiography (MRA) images of the carotid artery bifurcation were acquired. Multi-contrast fast spin echo (FSE) images were acquired axially about the level of the carotid web. Two types of cardiac phase resolved sequences (cineFSE and cine phase contrast) were acquired to visualize the elasticity of the vessel wall affected by the web.
  
  
  RESULTS
  Carotid webs were identified on MRA in 5/5 (100%) patients. Multi-contrast FSE revealed vessel wall thickening and cineFSE demonstrated regional changes in distensibility surrounding the webs in these patients.
  
  
  CONCLUSIONS
  Our MR imaging protocol enables an in-depth evaluation of patients with carotid webs: morphology (by MRA), composition (by multi-contrast FSE), and wall dynamics (by cineFSE).
authors.affiliation: Department of Biomedical Engineering, University of Calgary, Calgary, Canada.|Seaman Family MR Research Centre, Foothills Medical Centre, Calgary, Canada.
authors.forename: Mari E
authors.initials: ME
authors.lastname: Boesen
authors.affiliation: Department of Clinical Neurosciences, University of Calgary, Calgary, Canada.|Calgary Stroke Program, Foothills Medical Centre, 1403 29th Street NW, Calgary, T2N 2T9, Canada.
authors.forename: Prasanna Venkatesan
authors.initials: PV
authors.lastname: Eswaradass
authors.affiliation: Department of Clinical Neurosciences, University of Calgary, Calgary, Canada.|Calgary Stroke Program, Foothills Medical Centre, 1403 29th Street NW, Calgary, T2N 2T9, Canada.
authors.forename: Dilip
authors.initials: D
authors.lastname: Singh
authors.affiliation: Department of Clinical Neurosciences, University of Calgary, Calgary, Canada.|Calgary Stroke Program, Foothills Medical Centre, 1403 29th Street NW, Calgary, T2N 2T9, Canada.
authors.forename: Alim P
authors.initials: AP
authors.lastname: Mitha
authors.affiliation: Calgary Stroke Program, Foothills Medical Centre, 1403 29th Street NW, Calgary, T2N 2T9, Canada.|Department of Radiology, University of Calgary, Calgary, Canada.
authors.forename: Mayank
authors.initials: M
authors.lastname: Goyal
authors.affiliation: Seaman Family MR Research Centre, Foothills Medical Centre, Calgary, Canada.|Hotchkiss Brain Institute, University of Calgary, Calgary, Canada.
authors.forename: Richard
authors.initials: R
authors.lastname: Frayne
authors.affiliation: Department of Clinical Neurosciences, University of Calgary, Calgary, Canada. Bijoy.Menon@albertahealthservices.ca.|Calgary Stroke Program, Foothills Medical Centre, 1403 29th Street NW, Calgary, T2N 2T9, Canada. Bijoy.Menon@albertahealthservices.ca.
authors.forename: Bijoy K
authors.initials: BK
authors.lastname: Menon
mesh_terms: D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging*; D000072226:Computed Tomography Angiography; D003287:Contrast Media; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008875:Middle Aged; D009942:Organometallic Compounds; D011446:Prospective Studies
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; C090600:gadobutrol
keywords: Carotid web; FMD; Ischaemic stroke; MR angiography