MR imaging-guided percutaneous angioplasty and stent placement in a swine model: Comparison of open- and closed-bore scanners

Frank K. Wacker, Claudia Hillenbrand, Daniel R. Elgort, Shaoxiong Zhang, Jeffrey L. Duerk, Jonathan S. Lewin

Research output: Contribution to journalArticlepeer-review

Abstract

Rationale and Objectives. The purpose of this study is to compare the feasibility and precision of renal artery angioplasty and stent placement using two different MR scanners. Materials and Methods. MR imaging-guided angioplasty and stent placements were performed on seven pigs using 0.2 and 1.5 T scanners (Magnetom Open and Magnetom Sonata, Siemens Medical Solutions, Erlangen, Germany). For guidance of catheters, guide wires and stents susceptibility artifact-based tracking was used. The end point of each intervention was to position a stent in the renal artery with its proximal end at the level of the aortic wall. Procedure time and stent position were evaluated. Results. Catheterization, angioplasty, and stent placement were feasible using MRI guidance at both 0.2 and 1,5 Tesla. At 1.5 T all catheter manipulations and interventions were performed in less than 30 minutes. At 0.2 T the interventions took up to 90 minutes. No significant difference in the stent deviation was noted between the two scanners. Conclusion. The use of a high-performance 1.5 T scanner helped to reduce the procedure time to half of that of a low-field system. Since no difference in stent placement precision was noted, a dedicated MR-stent might be mandatory for more precise stent placement.

Original languageEnglish (US)
Pages (from-to)1085-1088
Number of pages4
JournalAcademic radiology
Volume12
Issue number9
DOIs
StatePublished - Sep 1 2005

Keywords

  • Arteries
  • Catheterization
  • Magnetic resonance (MR) guidance
  • Magnetic resonance (MR) vascular studies
  • Renal arteries
  • Stenosis or obstruction
  • Stent
  • Transluminal angioplasty

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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