Abstract: The present invention provides a fixation device comprising at least two inflatable and deflatable cushions (3,4) of two different types. The cushion of the first type (3) is deformable when inflated and not deformable when deflated, while the cushion of the second type (4) is arranged to at least partially expand into the direction of a cushion of the first type upon inflation. The fixation device provides for an improved fit and will easily and perfectly adapt to the shape and size of almost every body part.

Abstract: The invention provides a marker (20). The marker (20) comprises a circuit (22) actuated by a first frequency into conductive status to track position information of an object (40). The circuit (22) of the marker (20) is in a non-conductive status based on the second frequency, and the first frequency is not in the range of the second frequency for measuring the conductivity information of the object (40). The invention further provides a device for measuring conductivity information of the object by generating the first frequency and the second frequency.

Abstract: A magnetic impedance tomography system comprises an excitation system with several excitation coils to generate an excitation magnetic field to induce eddy currents in an examination volume. For example, a solenoid configuration or parallel coils, e.g. in a Helmholtz configuration are employed, Further, a measurement system is provided with several measurement coils to measure the fields generated by the induced eddy currents. The measurement coils are arranged in a volumetric (3D) geometrical arrangement. The individual measurement coils being orientated substantially transverse to the field line of the excitation magnetic field of the excitation coils. A reconstructor receives measurement data from the measurement system and reconstruct an age of an object in the volume of interest from the measurement data.