Patent ID: 8035375

Claim:
A structural material for the construction of external coverings for high voltage, high frequency sources, said coverings being contactable by humans or animals, comprising: a covering insertable into an MRI system, the covering having a first section and a second section, wherein the first section is a first element made of a first material; the second section is a porous covering made of a second material; the second section is located on top of the first section to form an enclosed cavity defined between the first element and the porous covering, wherein the porosity of the porous covering is provided by pores or holes in porous the covering, and the enclosed cavity is in communication with the atmosphere through the pores or holes of the porous covering, wherein the porous covering is in the form of a sheet that encloses the cavity, a thickness of the first element and the porous covering is on an order of millimeters.