Magnetic resonance device

A magnetic resonance device having a main magnet unit with a cylindrical patient aperture with a diameter of at least 60 cm, wherein the main magnet unit comprises:

• a cylindrical main magnet arrangement, which is outwardly delimited by a vacuum vessel, in which a support structure supporting main magnet coils is supported by suspension elements which are fastened externally on the vacuum vessel in fastening regions;
• at least one buttress ring which is guided at least partially about the vacuum vessel, is fastened hereto and covers the fastening regions by cover elements;
• a gradient connection plate for a gradient coil arrangement that surrounds the cylindrical patient aperture;
• and
• a cladding arrangement with at least one cladding part outwardly delimits the main magnet unit,
• wherein the gradient connection plate is fastened on an end face of the main magnet unit between the vacuum vessel and the cladding arrangement, and
• wherein the at least one buttress ring arranged centrally in a longitudinal direction of the main magnet unit is flatter in a top side region which extends about a highest point of the vacuum vessel and/or a floor region which extends about a lowest point of the vacuum vessel than in a laterally adjoining region.