Siemens Aktiengesellschaft

Siemens Healthcare Gmbh

Uli Holzermer

Hans-Juergen Mueller

Christian Willming

Friedrich Distler

Tobias Gnutzmann

Thorsten Büttner

An arrangement includes a stationary part of a gantry of a computed tomography scanner and a first rotating part of the gantry of the computed tomography scanner. The first rotating part and the stationary part are connectable to one another via a bearing assembly such that the first rotating part is arranged in a bearing position relative to the stationary part and is mounted via the bearing assembly such that it is rotatable about a system axis. The first rotating part and the stationary part are connectable to one another via a holding apparatus such that the first rotating part is arranged in a holding position relative to the stationary part independently of the bearing assembly. In both the bearing position and the holding position, a central opening of the first rotating part and a central opening of the stationary part are arranged about the system axis.

Arrangement with a stationary part and a first rotating part of a gantry of a computed tomography scanner and method for maintaining a component of a gantry of a computed tomography scanner

An air bearing has a rotor having a circularly curved radial rotor bearing surface along its circumferential direction. The air bearing also has a stator having at least one radial stator bearing surface partially enclosing the rotor in the circumferential direction. The radial stator bearing surface is curved according to a profile following the circumferential direction of the rotor and is fashioned to generate an air gap between it and the radial rotor bearing surface so that, upon operation, the rotor is borne, supported by an air current in the air gap. The profile shapes the air gap such that, at a starting temperature that deviates from an operating temperature, the air gap has a smaller thickness (measured in the radial direction) in a second region of the radial stator bearing surface in comparison to a first region of the radial stator bearing surface along the circumferential direction.

Air bearing to support a body

An x-ray computed tomography apparatus has a rotor on which are mounted at least one x-ray source and one detector. To avoid unwanted deformations of the rotor at high rotation speeds, the rotor is produced at least in segments from a fiber-reinforced composite material with a metal matrix.

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Erlangen, Germany

Uli Holzermer