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William D. Coolidge. William David Coolidge (/ ˈkuːlɪdʒ /; October 23, 1873 – February 3, 1975) [1] was an American physicist and engineer, who made major contributions to X-ray machines. He was the director of the General Electric Research Laboratory and a vice-president of the corporation. He was also famous for the development of ...
Jun 7, 2016 · Great improvements in X-ray tube stability, output and performance were obtained with the “hot cathode” or “Coolidge tube.” With some variation in filament and target geometry, this 100 year old invention is the same basic X-ray tube used today in medicine, research and industry.
- D. Allard
- 2016
- Modern X-Ray Tube Predecessor
- X-Ray Imaging Predecessor
- Mammography Predecessor
- Tomosynthesis Predecessor
- DSA Predecessor
- Interventional Radiography Predecessor
The cathode ray tube was invented by English physicist William Crookes before scientists had discovered x-rays or electrons. After later research it was discovered that the cathode rays were actually electrons being drawn across a positive potential. 1875 1895
Rontgen discovered the unknown particles and hence called them x-rays as x typically is an unknown variable. He did so by using a cathode ray tube and covering it in paper so as to block the electrons from escaping. However, the x-rays penetrated the paper and were detected using a phosphorous screen. The first human x-ray was of Rontgen’s wife han...
German surgeon Albert Salmon took a radiographs of breast tissue after it was excised from a mastectomy. He studied over 3000 mastectomies and found: micro-calcifications and different types of breast cancer. Salmon was later discharged from the University of Berlin during the Hitler regime and after forced time in a concentration camp he left Germ...
Ziedes des Plantes demonstrated the technique that by moving the x-ray source and image receptor (film) that a tomographic image can be generated. In this image structures above and below the focal plane are blurred out whereas those lying in the focal plane remain in focus. 1932 1934
Bernard George Ziedes des Plantes who trained in Utect (Netherlands) used two consecutive x-ray exposures: one with contrast and one without contrast to highlight just the contrast enhanced region. 1953 1956
Charles Dotter proposed and demonstrated the first use of percutaneous angioplasty such that a clot could be removed from within rather than performing imaging only to inform the recommendation of invasive surgery. 1964 1972
William D. Coolidge examining his hot cathode, high vacuum X-ray tube, 1913. Dr. Coolidge was devoted to his research work, but not to the exclusion of social contacts. Letters to his parents at that time made it clear that he was enjoying his friendships with Dr. and Mrs. Whitney and numerous colleagues in the Research Laboratory, and that he had met a number of young ladies.
- Emily Mace
William David Coolidge (1873-1975), an American physicist working for General Electric, introduced a new hot cathode x-ray tube in 1913, with articles sent to scientific publications, and demonstrations given to physicians and radiologists, many of whom saw the advantages for diagnostic purposes and cancer treatments.
Information about Coolidge X-Ray Tubes. Without a doubt, the single most important event in the progress of radiology was the invention by William Coolidge in 1913 of what came to be known as the Coolidge X-ray tube. Nevertheless, d espite its clear superiority, the Coolidge tube did not immediately replace cold cathode tubes—the latter ...
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ID: 328. Dimensions: 50 × 18 × 18 cm. Spherical glass bulb (purple from radiation damage) with cylindrical stems carrying the electrodes (cathode end broken). The Coolidge Tube, first produced in 1913 by W. Coolidge, is the forerunner of all the types of x-ray tubes in common use today. The Coolidge tube was the first type of practical x-ray ...
