title: Usefulness of contrast-enhanced magnetic resonance angiography for follow-up of coil embolization with the enterprise stent for cerebral aneurysms.
abstract: OBJECTIVE
  The aim of this study was to determine the feasibility and usefulness of contrast-enhanced magnetic resonance angiography (CE-MRA) and 3-dimensional (3D) time-of-flight (TOF) MRA for follow-up of intracranial aneurysms treated using the Enterprise stent.
  
  
  METHODS
  Five aneurysm cases using the Enterprise stent were prospectively analyzed and were followed up with CE-MRA, 3D TOF MRA, and digital subtraction angiography (DSA). Depictions of parent artery lumen and the aneurysm neck with 3D TOF MRA and CE-MRA were compared with those of DSA.
  
  
  RESULTS
  In all cases, on 3D TOF MRA, it was difficult to evaluate the parent artery lumen and aneurysm neck owing to the significant artifacts from the stent. Contrast-enhanced MRA sufficiently demonstrated parent artery lumen and aneurysm neck distinctly and as clear as DSA did in all cases.
  
  
  CONCLUSIONS
  For follow-up after coiling with an Enterprise stent, CE-MRA may be necessary to avoid susceptibility artifacts caused by the stent.
authors.affiliation: Department of Radiology and Interventional Neuroradiology, Ishinkai Yao General Hospital, Osaka, Japan. takayamaneuroivs@par.odn.ne.jp
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Takayama
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Taoka
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Kaoru
authors.initials: K
authors.lastname: Myouchin
authors.forename: Takeshi
authors.initials: T
authors.lastname: Wada
authors.forename: Masahiko
authors.initials: M
authors.lastname: Sakamoto
authors.forename: Akio
authors.initials: A
authors.lastname: Fukusumi
authors.forename: Satoru
authors.initials: S
authors.lastname: Iwasaki
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Kurokawa
authors.forename: Kimihiko
authors.initials: K
authors.lastname: Kichikawa
mesh_terms: D000368:Aged; D015901:Angiography, Digital Subtraction; D016477:Artifacts; D002533:Cerebral Angiography / Q000379:methods*; D003287:Contrast Media; D004621:Embolization, Therapeutic / Q000295:instrumentation; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D002532:Intracranial Aneurysm / Q000473:pathology* / Q000628:therapy*; D007479:Iopamidol; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008875:Middle Aged; D011446:Prospective Studies; D015607:Stents; D016896:Treatment Outcome
chemical_list: D003287:Contrast Media; D007479:Iopamidol