File:Earliest form of fluoroscope was a light-tight hood which the operator held before his eyes (cropped).jpg
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English: Earliest form of fluoroscope was a light-tight hood which the operator held before his eyes
Earliest form of fluoroscope was a light-tight hood which the operator held before his eyes. Fluorescent material which glowed when exposed to x-rays covered inside of bottom of hood. Because deleterious effects of overradiation were not recognized, no protection against direct or stray radiation was provided. Source of x-rays, part to be examined and fluoroscopic screen were positioned independently. |
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Radiology for medical students (1958) Internet Archive identifier: hodges_radiologyformedicalstudents_1958 |
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| Author | Hodges, Fred Jenner, 1895- | |||
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This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 18:03, 18 February 2021 | | 1,161 × 819 (245 KB) | Balkanique (talk | contribs) | File:Earliest form of fluoroscope was a light-tight hood which the operator held before his eyes.jpg cropped 22 % horizontally, 65 % vertically using CropTool with lossless mode. |
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