| diagnostic techniques, digestive system | Methods and procedures for the diagnosis of diseases or dysfunction of the digestive system or its organs or demonstration of their physiological processes. (12 Dec 1998) |
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| diagnostic techniques, respiratory system | Methods and procedures for the diagnosis of diseases of the respiratory tract or its organs. It includes respiratory function tests. (12 Dec 1998) |
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| diagnostic techniques and procedures | Methods, procedures, and tests performed to diagnose disease, disordered function, or disability. (12 Dec 1998) |
| diagnostic techniques, cardiovascular | Methods and procedures for the diagnosis of diseases or dysfunction of the cardiovascular system or its organs or demonstration of their physiological processes. (12 Dec 1998) |
| diagnostic techniques, endocrine | Methods and procedures for the diagnosis of diseases or dysfunction of the endocrine glands or demonstration of their physiological processes. (12 Dec 1998) |
| diagnostic techniques, neurological | Methods and procedures for the diagnosis of diseases of the nervous system, central and peripheral, or demonstration of neurologic function or dysfunction. (12 Dec 1998) |
| diagnostic techniques, obstetrical and gynecological | Methods and procedures for the diagnosis of conditions related to pregnancy, labour, and the puerperium and of diseases of the female genitalia. It includes also demonstration of genital and pregnancy physiology. (12 Dec 1998) |
| diagnostic techniques, ophthalmological | Methods and procedures for the diagnosis of diseases of the eye or of vision disorders. (12 Dec 1998) |
| diagnostic techniques, otological | Methods and procedures for the diagnosis of diseases of the ear or of hearing disorders or demonstration of hearing acuity or loss. (12 Dec 1998) |
| diagnostic techniques, radioisotope | Any diagnostic evaluation using radioactive (unstable) isotopes. This diagnosis includes many nuclear medicine procedures as well as radioimmunoassay tests. (12 Dec 1998) |
| diagnostic techniques, surgical | Methods and procedures for the diagnosis of disease or dysfunction by examination of the pathological site or operative field during surgical intervention. (12 Dec 1998) |
| diagnostic techniques, urological | Methods and procedures for the diagnosis of diseases or dysfunction of the urinary tract or its organs or demonstration of its physiological processes. (12 Dec 1998) |
| digestive system | The organs that are responsible for getting food into and out of the body and for making use of food to keep the body healthy. These include the mouth, oesophagus, stomach, liver, gallbladder, pancreas, small intestine, colon, and rectum. (12 Dec 1998) |
| digestive system abnormalities | Congenital structural abnormalities of the digestive system. (12 Dec 1998) |
| digestive system fistula | An abnormal passage communicating between any parts of the digestive system or between any part of the digestive system and other organs. (12 Dec 1998) |
| digestive system surgical procedures | Surgery performed on the digestive system or its parts. (12 Dec 1998) |