Whole Animal Exposures to Highly Filtered Gamma Rays
| Autor: | W. G. Whitman |
|---|---|
| Rok vydání: | 1933 |
| Předmět: | |
| Zdroj: | Radiology. 21:265-273 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/21.3.265 |
| Popis: | I. Introduction SINCE the development of high voltage x-ray tubes operating at voltages of the order of a million volts, the question of adequate protection for those engaged in this work against the very penetrating gamma-rays which are produced, an appreciable fraction of which passes through whatever shielding may be used, has become of considerable importance. More and more laboratories are expending efforts in this direction, a development which makes not only possible but practical the use of such tubes for medical applications. Roughly speaking, an x-ray tube operating at a million volts and 4 ma. gives off as much radiation as would be obtained from 1,000 grams of radium, and when 4 or 5 inches of lead is used to shield only 4 or 5 grams of radium the magnitude of the protection problem for those working with such tubes is readily seen. For this reason it seemed valuable to perform some experiments with highly filtered gamma-rays from radium in order to ascertain the dangers from exposure to such ... |
| Databáze: | OpenAIRE |
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