According to the Food and Agriculture Organization of the United Nations, the average minimum daily energy requirement is about 1,800 kilocalories (7,500 kJ) per person.
U.S. National Library of Medicine(0.00 / 0 votes)Rate this definition: Diagnostic Imaging. Any visual display of structural or functional patterns of organs or tissues for diagnostic evaluation. It includes measuring physiologic and metabolic responses to physical and chemical stimuli, as well as ultramicroscopy.
In medicine, a diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease.For example, such a test may be used to confirm that a person is free from disease, or to fully diagnose a disease, including to sub-classify it regarding severity and susceptibility to treatment.ost diagnostic tests are conducted on the living; however, some of these tests can also be carried out on a dead person as part of an autopsy.