US 12,436,215 B2
Shim apparatus, method for using the shim apparatus and MR apparatus
Johann Sukkau, Herzogenaurach (DE); Andrew Dewdney, Neunkirchen am Brand (DE); and Michael Leigart, Erlangen (DE)
Assigned to SIEMENS HEALTHINEERS AG, Forchheim (DE)
Filed by Siemens Healthineers AG, Forchheim (DE)
Filed on Mar. 22, 2023, as Appl. No. 18/187,762.
Claims priority of application No. 10 2022 202 954.2 (DE), filed on Mar. 25, 2022.
Prior Publication US 2023/0324483 A1, Oct. 12, 2023
Int. Cl. G01R 33/3873 (2006.01); G01R 33/07 (2006.01)
CPC G01R 33/3873 (2013.01) [G01R 33/07 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A shim apparatus for an MR apparatus, comprising:
a specimen holder, the specimen holder including a plurality of MR reference specimens, the MR reference specimens being on the specimen holder;
a frame;
a shaft, the shaft being mounted on the frame such that the shaft is rotatable about an axis of rotation, the specimen holder being non-rotatably connected to the shaft, the MR reference specimens being spaced apart from the axis of rotation;
a drive unit, the drive unit being configured to output a torque, the drive unit being electrical or pneumatic; and
a gear unit, the gear unit being configured to transfer the torque output by the drive unit to the shaft and to rotate or swivel the MR reference specimens about the axis of rotation, wherein
the frame has a base section and two shoulder sections, the shoulder sections each have a bearing point, the shaft is rotatably mounted in the bearing points, a working state and a transportation state is assumed by the shim apparatus, the shoulder sections in the working state space the shaft apart from the base section, and at least one of the specimen holder or the shaft are on the base section in the transportation state.