title: Noninvasive dynamic magnetic resonance angiography with Time-Resolved Imaging of Contrast KineticS (TRICKS) in the evaluation of orbital vascular lesions.
abstract: OBJECTIVE
  To evaluate the clinical utility of time-resolved contrast-enhanced magnetic resonance angiography (MRA) in the evaluation of vascular orbital tumors.
  
  
  METHODS
  Retrospective medical record review of patients with vascular orbital lesions imaged with Time-Resolved Imaging of Contrast KineticS (TRICKS; GE Healthcare [Chalfont St Giles, England]) MRA, a noninvasive dynamic imaging modality.
  
  
  RESULTS
  Five patients with orbital vascular tumors were evaluated using TRICKS MRA. These included 1 patient with a cavernous hemangioma, 2 patients with orbital varices, 1 patient with an orbitocutaneous arteriovenous malformation, and 1 patient who had a solitary fibrous tumor with features of a hemangiopericytoma. In 2 patients, diagnoses were altered as a result of TRICKS MRA. In addition, a young patient with a large orbitocutaneous arteriovenous malformation involving the ophthalmic artery was followed perioperatively and noninvasively using TRICKS MRA, which produced exquisite images and added substantial value in the care of these patients.
  
  
  CONCLUSIONS
  Dynamic MRA in the form of TRICKS is a newly available imaging modality with great potential for improving the evaluation and management of patients with complex orbital tumors.
authors: Department of Ophthalmology and Visual Sciences, University of Michigan, Kellogg Eye Center, 1000 Walls St, Ann Arbor, MI 48105, USA. akahana@med.umich.edu
authors: Alon
authors: A
authors: Kahana
authors: Mark J
authors: MJ
authors: Lucarelli
authors: Allison M
authors: AM
authors: Grayev
authors: Jeremy J
authors: JJ
authors: Van Buren
authors: Cat N
authors: CN
authors: Burkat
authors: Lindell R
authors: LR
authors: Gentry
mesh_terms: D000328:Adult; D000368:Aged; D001165:Arteriovenous Malformations / Q000175:diagnosis*; D001783:Blood Flow Velocity; D002648:Child; D005260:Female; D006392:Hemangioma, Cavernous / Q000175:diagnosis*; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D009915:Orbit / Q000098:blood supply*; D009918:Orbital Neoplasms / Q000175:diagnosis*; D012039:Regional Blood Flow; D012189:Retrospective Studies; D054364:Solitary Fibrous Tumors / Q000175:diagnosis*; D013997:Time Factors; D014648:Varicose Veins / Q000175:diagnosis*