radioisotope vesicoureteral reflex test
| radioepithelitis | Destructive changes in epithelium produced by ionizing radiation. (05 Mar 2000) |
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| radiofrequency | 1. Radiant energy of a certain frequency range; e.g., radio and television employ radiant energy having a frequency between 105-1011 Hz, while diagnostic X-rays have a frequency in the range of 3 × 1018 Hz. 2. In magnetic resonance imaging, the energy applied to switch or create a gradient in the magnetic field. (05 Mar 2000) |
| radiofrequency plugging | <radiobiology> Use of axial ponderomotive force to plug an open-ended device. First demonstrated on RFC-XX, Institute of Plasma Physics, Nagoya University, Nagoya, Japan, and later demonstrated in the Phaedrus device at the University of Wisconsin. (09 Oct 1997) |
| radiofrequency pulse | In nuclear magnetic resonance, a short electromagnetic signal used to change the direction of the magnetic field. See: sequence pulse. (05 Mar 2000) |
| radiofrequency trapping | <radiobiology> Use of RF waves to pitch angle scatter particles flowing axially into a magnetic mirror cell. The particles are scattered out of the loss cone and are trapped. (See entries for pitch angle scattering, magnetic mirror, loss cone.) (09 Oct 1997) |
| radiogallium | Gallium that is radioactive. See: gallium-67, gallium-68. (05 Mar 2000) |
| radiogenesis | The formation or production of radioactivity resulting from radioactive transformation or disintegration of radioactive substances. Origin: radio-+ G. Genesis, production (05 Mar 2000) |
| radiogenic | 1. Producing rays of any sort, especially electromagnetic rays. 2. Caused by x-or gamma rays. (05 Mar 2000) |
| radiogenics | The science of radiation. (05 Mar 2000) |
| radiogold colloid | A radioactive isotope of gold emitting negative beta particles and gamma radiation, with a half-life of 2.7 days; formerly used for irradiation of closed serous cavities in the palliative treatment of ascites and pleural effusion due to metastatic malignancies, and for liver scans. Synonym: 198Au colloid, colloidal radioactive gold. (05 Mar 2000) |
| radiogram | An obsolete term for radiograph. Origin: radio-+ G. Gramma, something written (05 Mar 2000) |
| radiograph | <dentistry> Another name for an X-ray (08 Jan 1998) |
| radiographer | A nonmedically qualified person who assists the radiologist in imaging (diagnostic radiographer) or the radiotherapist in treatment (therapeutic radiographer). (16 Dec 1997) |
| radiographic image enhancement | Improvement in the quality of an X-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed. (12 Dec 1998) |
| radiographic image interpretation, computer-assisted | Computer systems or networks designed to provide radiographic interpretive information. (12 Dec 1998) |
Synonyms : Interventional Radiography
Synonyms : Orthopantomographies, Panoramic Radiographies, Pantomographies, Radiographies, Panoramic
Synonyms : Thoracic Radiography, Radiographies, Thoracic, Thoracic Radiographies
Synonyms : Radioimmunoassays
Synonyms : Immunoscintigraphy, Radiolabelled, Radiolabeled Immunoscintigraphy, Radiolabelled Immunoscintigraphy, Immunoscintigraphies, Radiolabeled, Immunoscintigraphies, Radiolabelled, Radioimmunodetections, Radioimmunoimagings, Radioimmunoscintigraphies
| radioulnar |
(ra
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| radioactive equilibrium |
the fixed ratio between a radioactive element and one of its disintegration products that results after the lapse of a suitable time, owing to their half value periods. That of uranium and radium is 2,380,000:1.
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| radiochemical analysis |
direct or indirect identification or determination of the content of specific elements in a substance through measurement of the disintegration rates of radionuclides.
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| radiofrequency pacemaker |
a cardiac pacemaker consisting of an antenna coil on the skin and a subcutaneously implanted receiving coil with an electrode inserted into the ventricular myocardium. Pulses from a lightweight radio transmitter carried by the patient are transmitted to the pacemaker.
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| radiosensitive |
(ra
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| RADIO | test of thyroid function in which the patient is give an oral does of radioactive iodine-131 |
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| RADIO | radioactive iodine test that measures the amount of radioactive iodine taken up by the thyroid gland |
| RADIO | material that is radioactive |
| RADIO | useless radioactive materials that are left after some laboratory or commercial process is completed |
| RADIO | in a radioactive manner |
| RADIO | the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay |
| RADIO | a measure of radioactivity |
| RADIO | the branch of biology that studies the effects of radiation on living organisms |
| RADIO | a radioactive isotope of carbon |
| RADIO | a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14 |
| RADIO | a joint between the distal end of the radius and the proximal row of carpal bones |
| RADIO | a chemist who specializes in nuclear chemistry |