| Autor: |
Wagner, Henry N., McAfee, John G., Mozley, James M. |
| Zdroj: |
JAMA: Journal of the American Medical Association; September 1960, Vol. 174 Issue: 2 p162-165, 4p |
| Abstrakt: |
RADIOISOTOPE scanning, the visualization of an internal organ by de[ill]mining the spatial distribution of a radioisotope within the body, is a technique that has made rapid progress in the last few years. Advances have been chiefly along three lines: (1) the development of improved radiation detection equipment; (2) the production of radiopharmaceutical compounds that concentrate in organs, such as colloidal gold in the liver and chlormerodrin (Neohydrin) in the kidneys; and (3) a more complete understanding of the factors necessary to obtain scanning images that are readily interpretable by the clinician.Satisfactory visualization is primarily dependent on the selective deposition of gamma-emitting radioisotopes in specific organs. Just as in cholecystography and renal pyelography, a physiological concentrating mechanism is utilized to concentrate the material. With radioisotope scanning, however, it is not necessary to achieve the high concentration necessary to produce opacity to x-rays. The relative concentration of the radioisotope in |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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