title: [Stent angioplasty of pelvic artery stenosis with MRI control: initial clinical results].
abstract: OBJECTIVE
  To investigate the feasibility of MR-guided stent angioplasty of iliac artery stenoses under passive visualization.
  
  
  METHODS
  Three patients with short, concentric stenoses of the iliac arteries were enrolled. The vascular interventions were performed on a 1.5 T MR scanner (Magnetom Symphony, Siemens, Erlangen, Germany). Stents, guidewires, and balloon catheters were visualized on the basis of susceptibility artifacts. Contrast-enhanced MR angiography (ceMRA) was used to localized the stenosis prior to stent deployment. Nitinol stents were placed under MR-guidance using a fast 2D gradient echo technique. Balloon dilatiation was performed with an angioplasty catheter inflated with diluted gadolinium-DTPA. Postinterventional results were evaluated by ceMRA, DSA, and Doppler indices.
  
  
  RESULTS
  Position of the stent, stent deployment, and balloon dilatation were depicted by MR. All stents were correctly placed within the stenosis. Stent positions as monitored by MRI were identical to those seen on DSA images. All patients were treated successfully by the MR-guided intervention.
  
  
  CONCLUSIONS
  An MR-guided stent angioplasty of simple iliac artery stenosis is feasible under passive visualization.
authors.affiliation: Institut für Röntgendiagnostik, Klinikum der Universität Regensburg.
authors.forename: C
authors.initials: C
authors.lastname: Manke
authors.forename: W R
authors.initials: WR
authors.lastname: Nitz
authors.forename: M
authors.initials: M
authors.lastname: Lenhart
authors.forename: M
authors.initials: M
authors.lastname: Völk
authors.forename: A
authors.initials: A
authors.lastname: Geissler
authors.forename: B
authors.initials: B
authors.lastname: Djavidani
authors.forename: M
authors.initials: M
authors.lastname: Strotzer
authors.forename: P
authors.initials: P
authors.lastname: Kasprzak
authors.forename: S
authors.initials: S
authors.lastname: Feuerbach
authors.forename: J
authors.initials: J
authors.lastname: Link
mesh_terms: D000368:Aged; D000800:Angioplasty, Balloon; D001157:Arterial Occlusive Diseases / Q000175:diagnosis / Q000628:therapy*; D003287:Contrast Media; D005240:Feasibility Studies; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007083:Iliac Artery / Q000473:pathology; D007089:Image Enhancement; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D015607:Stents; D016896:Treatment Outcome
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA