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- W4231526771 abstract "Purpose: 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. Methods: 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. Results: 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. Conclusions: 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 this technology an attractive alternative to X-ray imaging techniques." @default.
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- W4231526771 date "1996-11-01" @default.
- W4231526771 modified "2023-09-27" @default.
- W4231526771 title "Will it Be Feasible to Insert Endoprostheses under Interventional MRI?" @default.
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- W4231526771 doi "https://doi.org/10.1177/152660289600300407" @default.
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