Coordinates communications between referring physicians, departmental physicians and staff, nursing units and/or hospital staff to facilitate smooth patient and staff flow, inpatient transportation, scheduling, supply replenishment, equipment repair and problem-solving. Becomes knowledgeable in laboratory protocol, measuring heart chamber size and wall thickness, scanning techniques, preliminary interpretation of M-mode, two-dimensional, planar Doppler flow studies, 3D echo, as well as Stress Echoes.