Nuclear Medicine is concerned with providing diagnostic information about patients following the administration of a radioactive product. The patient is imaged using a Gamma Camera. Images are produced of the distribution of the radioactive substance within different organs and systems. This can be present and assess its extent or severity. A multidisciplinary health care team, comprising of medical staff, hospital physicists, radiopharmacists, medical technologists, radiography practitioners, nurses and clerical support staff, delivers the nuclear medicine service. Nuclear medicine departments can be autonomous or part of a diagnostic imaging department.