Patent ID: 8774934

Claim:
A temperature sensor configured to detect heating of at least one electrode pole of an implantable electrode line having at least one elongated electrical conductor which is connected to the at least one electrode pole, during a nuclear spin tomography or magnetic resonance tomography (MRT), comprising: an impedance detection unit that is part of said temperature sensor or is connected to said temperature sensor; wherein said impedance detection unit is configured to evaluate an electrode pole impedance detected by the impedance detection unit to detect a temperature-dependent feature or change of the electrode pole impedance; wherein the impedance detection unit is configured to be electrically connected to the at least one electrode pole; a magnetic resonance tomography (MRT) sensor configured to respond to a presence of MRT-typical magnetic fields and to generate an output signal which indicates the presence of the MRT-typical magnetic fields; and wherein the temperature sensor is configured to separate a temperature-related impedance curve from impedance curves based on causes other than temperature-related causes, through use of a reference impedance curve which was recorded and stored during times in which no nuclear spin tomography or magnetic resonance tomography (MRT) took place.