Abstract: Apparatuses, systems and methods for tracking and providing reminders of scheduled events for medical equipment involve the use of portable tracking devices that may be secured to individual items of medical equipment that are scheduled to which one or more scheduled events may apply. In a specific embodiment, shields for limiting an individual's exposure to ionizing radiation may be tracked. Methods for actively or passively tracking one or more medical devices until the arrival of a time for a predetermined, or scheduled, event or total time elapsed are also disclosed, as are methods for performing predetermined events on medical devices.