The Differences between 200 Kilovolt and Supervoltage Roentgen Therapy
| Autor: | Richard Dresser, Joe C. Rude, Bernard J. Cosman |
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| Rok vydání: | 1940 |
| Předmět: | |
| Zdroj: | Radiology. 34:13-16 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/34.1.13 |
| Popis: | IN spite of the differences of opinion regarding the relative value of high voltage and supervoltage roentgen rays, the trend in the radiation of malignant disease is toward the use of the shorter wave lengths. In most clinics where large amounts of radium are available, it has been the impression that telecurie therapy possesses advantages over the use of 200 kilovolt roentgen rays. Unfortunately, the supply of radium is small, and its use for external radiation at a distance is not economically feasible. The production of roentgen rays of wave lengths approaching the gamma rays of radium has been the endeavor of physicists and manufacturers of roentgen apparatus for a number of years. The use of electrostatic machines for the generation of roentgen rays is not new. Most of the early apparatus was built on this principle. However, the more or less unreliable “static machines” gave way to transformer units both for diagnostic and therapeutic work. Recently, a modification of the electrostatic principle of... |
| Databáze: | OpenAIRE |
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