Calibrated energy transfer

An apparatus for transferring electromagnetic energy to an energy application zone via a source of electromagnetic energy, the apparatus comprising:

• a processor configured to:
• determine a target amount of energy to be dissipated in an object located at least partially in the energy application zone;
• determine an estimated amount of energy that was dissipated in the object based on primary calibration information, an amount of energy returned from the energy application zone, and an amount of energy supplied to the energy application zone;
• and
• cause the source to transfer energy to the energy application zone at least until the estimated amount of energy equals the target amount of energy.

A method of operating an apparatus for transferring electromagnetic energy to an energy application zone, the method comprising:

• determining a preliminary amount of energy to be dissipated in an object located at least partially in the energy application zone;
• determining a corrected amount of energy based on the preliminary amount of energy and calibration information;
• detecting an amount of energy returned from the energy application zone;
• determining an amount of delivered energy, based on the amount of energy returned from the energy application zone and an amount of energy supplied to the energy application zone;
• and
• causing the source to transfer energy to the energy application zone at least until the amount of delivered energy equals the corrected amount of energy.

A kit for calibrating an apparatus for transferring electromagnetic energy, the kit comprising:

• at least one standard object;
• and
• information regarding use of the at least one standard object to calibrate the apparatus,
• wherein at least a portion of the information is encoded on one or more machine readable elements.

An apparatus for transferring electromagnetic energy to an energy application zone via a source of electromagnetic energy, the apparatus comprising:

• a processor configured to:
• determine a preliminary amount of energy to be dissipated in an object located at least partially in the energy application zone;
• determine a corrected amount of energy based on the preliminary amount of energy and calibration information;
• estimate the amount of energy dissipated in the object;
• and
• cause the source to transfer energy to the energy application zone at least until the energy dissipated in the object as estimated equals the corrected amount of energy.