A system that produces anatomical reproducibility during a medical procedure includes a catheter configured to produce anatomical reproducibility and to detect motion of target tissue, which includes a catheter that has a first lumen formed therein. The motion tracking device includes a motion tracking assembly that is removably disposed within the first lumen. The motion tracking assembly has a plurality of motion tracking elements that are connected to one another with a connector. The motion tracking elements are spaced apart at fixed distances relative to one another. The motion tracking elements are configured such that movement of any one of the motion tracking elements is detected by the motion tracking device, thereby indicating that the target tissue has moved during the medical procedure. Detecting such movement in real-time allows the operator (e.g., radiation oncologist) to take any necessary immediate remedial action including stopping the medical procedure.
