| PRE | photoreacting enzyme; physician's report of examination; pigmented retinal epithelium; preplacement ... |
|---|---|
| PRR | proton relaxation rate; pulse repetition rate |
| RARE | rapid acquisition with relaxation enhancement |
| RRI | recurrent respiratory infection; reflex relaxation index; relative response index |
| RV-IVRT | right ventricular isovolumic relaxation time |
| 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, 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) |
| 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) |
| immunoenzyme techniques | Immunologic techniques based on the use of: 1) enzyme-antibody conjugates; 2) enzyme-antigen conjugates; 3) antienzyme antibody followed by its homologous enzyme; or 4) enzyme-antienzyme complexes. These are used histologically for visualizing or labeling tissue specimens. (12 Dec 1998) |
| immunosorbent techniques | Techniques for removal by adsorption and subsequent elution of a specific antibody or antigen using an immunosorbent containing the homologous antigen or antibody. (12 Dec 1998) |
| indicator dilution techniques | Methods for assessing flow through a system by injection of a known quantity of an indicator, such as a dye, radionuclide, or chilled liquid, into the system and monitoring its concentration over time at a specific point in the system. (12 Dec 1998) |
| investigative techniques | Investigative techniques used in pre-clinical and clinical research, epidemiology, chemistry, immunology, genetics, etc. They do not include techniques specifically applied to diagnosis; therapeutics; anaesthesia and analgesia, surgery, operative, and dentistry. (12 Dec 1998) |
| jaw fixation techniques | The stable placement of surgically induced fractures of the mandible or maxilla through the use of elastics, wire ligatures, arch bars, or other splints. It is used often in the cosmetic surgery of retrognathism and prognathism. (12 Dec 1998) |
| fluorescent antibody techniques | Lab techniques for locating antigens in a prepared tissue sample by using antibodies with fluorescent labels which will bind to the antigens of interest. (09 Oct 1997) |
| abstracting and indexing | Shortening or summarizing of documents; assigning of descriptors for referencing documents. (12 Dec 1998) |
| academies and institutes | Organizations representing specialised fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., national academy of sciences, brookings institution, etc. (12 Dec 1998) |
| accounts payable and receivable | Short-term debt obligations and assets occurring in the regular course of operational transactions. (12 Dec 1998) |
| aged, 80 and over | A person 80 years of age and older. (12 Dec 1998) |