Characterizing and mapping of a magnetic field of a medical device

A computing device for representing, with a computer model, a magnetic field generated by a magnetic field source of a magnetic-field-based medical device, comprising:

• an input interface for receiving a plurality of magnetic field measurement entries of said magnetic field;
• a processor;
• and
• memory storing program code that, when executed by said processor, causes said processor to:
• receive a theoretical three-dimensional model of said magnetic field generated by said magnetic field source;
• receive, via said input interface, said plurality of magnetic field measurement entries, wherein each magnetic field measurement entry of said plurality of magnetic field measurement entries comprises an amplitude value of said magnetic field and a corresponding positional coordinate;
• estimate errors of amplitude between default amplitude values of said theoretical three-dimensional model and corresponding said amplitude values of said plurality of magnetic field measurement entries based on said positional coordinates of said plurality of magnetic field measurement entries;
• and
• adjust default values of said theoretical three-dimensional model based on said estimated errors of amplitude, resulting in a real-world three-dimensional magnetic field model from said theoretical three-dimensional model with adjusted amplitude values, whereby said real-world three-dimensional magnetic field model comprises a constellation of adjusted amplitude values in a space representative of said magnetic field generated by said magnetic field source.