The present invention relates to an electronic system (10) of an implantable medical device, comprising at least one first circuit (20), at least one tracking means, which is configured such that radio frequency bursts and/or a gradient magnetic field of a magnetic resonance imaging apparatus can be tracked, and at least one synchronizing means, whereby the synchronizing means is configured such that based on the tracked radio frequency bursts and/or the gradient magnetic field the at least one first circuit (20) and/or the electronic system (10) as a whole is synchronized with the radio frequency bursts and/or the gradient magnetic field.
