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==== Magnetic Resonance Compatible Guide Wires ====
Using an [[Magnetic Resonance Imaging|MRI]] to image the guide wire during use would have an advantage over using x-rays because the surrounding tissue can be examined while the guide wire is advanced. Because most guide wires' core materials are stainless steel they are not capable of being imaged with an MRI. Nitinol wires are not magnetic and could potentially be imaged, but in practice the conductive nitinol heats up under the magnetic radiation which would damage surrounding tissues. An alternative that is being examined is to replace contemporary guide wires with PEEK cores, coated with iron particle embedded synthetic polymers.<ref name=MRI>{{cite journal |doi=10.1002/jmri.20486 |title=A polymer-based MR-compatible guidewire: A study to explore new prospects for interventional peripheral magnetic resonance angiography (ipMRA) |year=2006 |last1=Mekle |first1=Ralf |last2=Hofmann |first2=Eugen |last3=Scheffler |first3=Klaus |last4=Bilecen |first4=Deniz |journal=Journal of Magnetic Resonance Imaging |volume=23 |issue=2 |pages=145–55 |pmid=16374877|doi-access=free }}</ref>
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