The present invention is directed to a method of fastening a cage with a fastening system in an MRD, said method comprising at least the steps of: assembling a plurality of pole pieces a plurality of side magnets, said side magnets substantially enclosing said pole pieces and thereby defining a magnetic envelope and enclosed volume therein a plurality of side walls, said side walls substantially enclosing said side magnets a plurality of face walls and a plurality of fastening rods and of passing a plurality of fastening rods through at least one of said side magnets and at least one of said pole pieces and fastening them in an effective measure, such that said rods physically interconnects at least one pair of side walls.【課題】締結/減衰システムを有する磁気共鳴器(MRD)内の保持器を提供する。【解決手段】MRD内の前記保持器は、(a)2個の極片45と、(b)前記極片を実質的に包囲し、それにより磁気包絡線および包囲された体積をその中で画定する2個の側面磁石と、(c)前記側面磁石を実質的に包囲する2個の側壁10と、(d)2個の面壁30と、(e)複数の締結棒100と、を備え、前記締結棒のそれぞれは、少なくとも1対の側壁を物理的に相互接続し、前記側面磁石のうち少なくとも1つおよび前記極片のうち少なくとも1つを通過する。【選択図】図9
