| 摘要 |
MRI apparatus include coil systems for generating magnetic fields. These coil systems require currents of some hundreds of A and voltages as high as some kV. Furthermore, weak and noise-sensitive signals must be detected in such apparatus; therefore, the measuring space of the apparatus is accommodated in a Faraday cage, but another part of the equipment of the MRI apparatus is arranged outside said cage. Therefore, power signals as well as data signals must be fed through II filters in the wall of the Faraday cage; thus far, such feeding through took place via one type of filter. In accordance with the invention, two filter elements are used, i.e. one filter element for the power conductors which comprises only one filter and one filter element for the data conductors which comprises several filters. The latter filter element is preferably provided with capacitors which are integrated in the connectors which are mounted on a PC board.
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