A tracking system for a target anatomy of a patient can include a medical device having a magnetic source integrally connected thereto and positionable in the target anatomy a plurality of Optical Atomic Magnetometer (OAM) sensors for detecting a magnetic field from the magnetic source and a processor for determining a position of the medical device based on one or more parameters associated with the detected magnetic field. Other embodiments can include connecting a magnetic source with the medical device and having the OAM sensors positionable in proximity to the target anatomy.
