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Abstract
The use of a restricted beam of radiation when serial roentgenograms of small areas
are to be made is suggested. The diagnostician benefits from a roentgenogram that
has increased definition, and the patient is subjected to less tissue irradiation.
The construction of a simple, inexpensive cylinder cone of practicable dimensions
is described.
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References
- X-ray Protection in the Dental Office.J. Am. Dent. A. 1958; 56: 514
- Diaphragm for X-ray Examination in Detail.D. Radiog. & Photog. 1957; 30: 61
- Dental Roentgenography. I. An Investigation in Adumbration, or the Factors That Control Geometric Unsharpness.J. Am. Dent. A. 1947; 34: 1
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© 1959 Published by Elsevier Inc.
