Will it be feasible to insert endoprostheses under interventional MRI?

Journal of Endovascular Surgery : the Official Journal of the International Society for Endovascular Surgery
P W StromanR G Guidoin

Abstract

Recent advances in magnetic resonance imaging (MRI) technology may provide a safer and more sensitive monitoring modality than X-ray imaging for endovascular surgical procedures. The purpose of this study was to investigate the feasibility of using MRI to monitor the insertion of endoprostheses. The endoprostheses we studied were composed of a nitinol stent encased in a polyester sheath. These were characterized with four different MRI techniques: the fast spin-echo; spin-echo; gradient-recalled echo; and the spoiled gradient-recalled echo. The deployment of the endoprosthesis into an artery was simulated in an in vitro model and viewed using a fast spin-echo MRI technique. Image artifacts produced by the nitinol framework in these endoprostheses were minimal when fast spin-echo or spin-echo imaging techniques were used, improving the visibility of the device. In in vitro tests, the catheters and endoprostheses were visualized by MRI with sufficient clarity to guide the placement of a device in the model artery. Insertion of this type of endoprosthesis under interventional MRI guidance is feasible. The convenience and improved safety provided by interventional MR systems and "real-time" imaging capabilities are expected to make...Continue Reading

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Citations

Oct 2, 1998·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·A Laurent
Jun 6, 2002·Journal of Paediatrics and Child Health·Y F CheungH K Y Hui
Apr 25, 2000·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·M FormichiR Guidoin
Oct 2, 1998·Journal of Vascular and Interventional Radiology : JVIR·H F SmitsC J Bakker
May 29, 2003·Journal of Interventional Cardiology·Jolanda J WentzelZahi A Fayad
Jun 30, 2000·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·C D Barras, K A Myers
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Aug 5, 2003·Physics in Medicine and Biology·L W Bartels, C J G Bakker
Mar 8, 2003·International Journal of Cardiovascular Interventions·Xiaoming YangElias A Zerhouni
Mar 19, 2004·Artificial Cells, Blood Substitutes, and Immobilization Biotechnology·R GuidoinC Baquey
Dec 5, 1998·Journal of Vascular and Interventional Radiology : JVIR·X YangE Atalar

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