An expandable metallic stent has discontinuities of non-conducting material. These eliminate electrically conducting paths in the stent rings and cells. This makes the stent easier to image with magnetic resonance imaging (MRI). The non-conducting material can include adhesives, polymers, ceramics, composites,...http://www.google.ca/patents/US6712844?utm_source=gb-gplus-sharePatent US6712844 - MRI compatible stent
