An electromagnetic shield has a first patterned or apertured layer having non-conductive materials and conductive material and a second patterned or apertured layer having non-conductive materials and conductive material. The conductive material may be a metal, a carbon composite, or a polymer composite....http://www.google.de/patents/US20040199069?utm_source=gb-gplus-sharePatent US20040199069 - Device and method for preventing magnetic resonance imaging induced damage
