1. A cardiac imaging system comprising: an imaging module including an ultrasound emitter and at least one position marker, the imaging module configured to obtain a plurality of 2D or 3D image slices; and a tracking and control system including a position sensing system for sensing a location and orientation of the position marker relative to a predetermined reference wherein the location and orientation of the position marker is indicative of the location and orientation of the imaging module, the tracking and control system operable with the imaging module to produce at least a three dimensional image of a patient's anatomy from the plurality of 2D or 3D image slices and location and orientation of the position marker relative to the predetermined reference; and wherein the tracking and control system is configured to detect omitted areas of the patient's anatomy by determining gaps between corresponding 2D or 3D image slices of the plurality of 2D or 3D image slices, and provide guidance information to position the imaging module to obtain data pertaining to omitted areas of the patient's anatomy, wherein at least a 2D or 3D image slice for the determined gap is obtained by the position of the imaging module obtained from the guidance information to fill the omitted area within a predetermined parameter of accuracy and provide an alert when the omitted area is filled.