A Practical Method for the Routine Determination of the Quantity and Quality of X-rays
| Autor: | Edwin C. Ernst |
|---|---|
| Rok vydání: | 1925 |
| Předmět: | |
| Zdroj: | Radiology. 5:468-479 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/5.6.468 |
| Popis: | THE intensity or effective wave length output of our present high tension X-ray transformers and X-ray tubes does not appear to be either scientifically or practically uniform and constant; at least, not sufficiently accurate to permit the desired exact duplication of dosages, even though the determinations are made under the most favorable conditions of constant voltage and tube current. A review of the many careful recent researches of the physicists studying these problems more or less substantiates our practical experiences and observations in the administration of X-ray dosages in our daily clinical routine treatments, and the results observed in our biological researches at the Barnard Free Skin and Cancer Hospital. Duane has recently stated that “Variations of 40 per cent and more in the intensity of the X-ray projected through the same filter and at the same distance from the tube with different machines are not uncommon, and in the extreme cases one machine may project twice as much X-radiation a... |
| Databáze: | OpenAIRE |
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