Encapsulation of a magnetic resonance tomography device for damping low sound frequencies

摘要

Nuclear spin tomography device comprising a magnetic body (1) surrounded by a magnetic shell (12) which surrounds and delimits an interior (21), in which interior (21) there is a gradient coil system (2) and in this in turn an inner encapsulation cylinder and the magnetic shell (12) and the gradient coil system (2) from the inner encapsulation cylinder and a capsule (22) are acoustically closed to the outside, so that acoustic vibrations which are generated when the gradient coil system (2) is switched over and are transmitted to the magnetic sleeve (12) are not penetrate into the outside space, characterized in that the capsule (22) is a three-layer system in which the outermost layer consists of a cover layer (26), the middle layer consists of a full foam layer (25) and the inner layer consists of a foam cube or Partial foam layer (24) containing foam strips.