Device for the measurement of the magnetic field of gradient coils in an MR tomography device

摘要

The invention relates to a device (1) for the measurement of the magnetic field of gradient coils (9) in an MR tomography device having a measuring coil (43), which is adjustable in the gradient field and, for this purpose, can be guided into the cylindrical cavity (13) of the high-power magnet in which a homogenous magnetic field is built up, the gradient coils (9) being situated on a gradient tube (7) inside the cavity (13). The invention is characterised by a carrying frame (17) which is designed for a fastening on the gradient tube (7), and by a carrier (28) which is arranged on the carrying frame (17), extends in the axial direction of the gradient tube (7), is rotatable about the axis of the gradient tube, can be driven axially with respect to the gradient tube (7) and which carries the measuring coil (43) which is arranged on it so as to be radially adjustable. <IMAGE>