title: Dynamic arterial and valsalva-augmented venous phase multidetector CT for orbital vascular lesions: a pictorial review*.
abstract: OBJECTIVE
  To describe the value and purpose of a new method of dynamic arterial and Valsalva-augmented venous phase CT angiographic assessment of vascular orbital lesions.
  
  
  METHODS
  Description of a dynamic arterial and Valsalva-augmented venous phase multidetector CT protocol currently being used at the institution of the authors for investigation of orbital vascular lesions. Research ethics approval was not required by the institution because this is a 1-case report, with a pictorial review of imaging findings in various representative orbital vascular lesions.
  
  
  RESULTS
  One case of a distensible venous malformation depicts the clinical application of the imaging protocol. Key features of the malformation were demonstrated by arterial and venous phases of imaging.
  
  
  CONCLUSIONS
  This technique is of value in diagnosis and management of vascular malformations of the orbit.
authors.affiliation: *Department of Radiology, †Department of Ophthalmology and Visual Sciences, and ‡Department of Pathology and Laboratory Medicine, University of British Columbia and the Vancouver General Hospital, Vancouver, British Columbia, Canada.
authors.forename: Manraj Kanwal Singh
authors.initials: MK
authors.lastname: Heran
authors.forename: Jack
authors.initials: J
authors.lastname: Rootman
authors.forename: Bippan S
authors.initials: BS
authors.lastname: Sangha
authors.forename: Jason M
authors.initials: JM
authors.lastname: Yeo
mesh_terms: D000273:Adipose Tissue / Q000637:transplantation; D000368:Aged; D001158:Arteries; D004108:Dilatation, Pathologic; D015841:Enophthalmos / Q000175:diagnosis; D005260:Female; D006801:Humans; D061330:Multidetector Computed Tomography / Q000379:methods*; D009915:Orbit / Q000098:blood supply*; D014636:Valsalva Maneuver; D054079:Vascular Malformations / Q000000981:diagnostic imaging* / Q000601:surgery; D014680:Veins / Q000002:abnormalities