Biomedical engineering is an interdisciplinary field in which engineering techniques are applied to solve problems in medicine and healthcare technologies. Biomedical engineers use microcomputers, lasers, and other materials to develop and improve medical research equipment that are used to diagnose or treat health problems. They may be involved in the design and engineering of medical products and equipment, for which they must have a firm understanding of biomechanics and neurophysiology. Areas of specialization are usually pursued at the graduate level and include the following areas: Bioinstrumentation; Biomechanics; Clinical Engineering; Systems Physiology; Biomaterials; and Rehabilitation engineering.