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Hyun Jin Kim; Hyun Nam Kim; Hamid Saeed Raza; Han Beom Park; Sung Oh Cho (2016)
Publisher: Elsevier
Journal: Nuclear Engineering and Technology
Languages: English
Types: Article
Subjects: Nuclear engineering. Atomic power, Miniature X-ray Tube, Nuclear Energy and Engineering, Radiography, CNT Field Emitter, X-ray Image, TK9001-9401

Classified by OpenAIRE into

mesheuropmc: stomatognathic system, stomatognathic diseases
A miniature X-ray tube based on a carbon-nanotube electron emitter has been employed for the application to a dental radiography. The miniature X-ray tube has an outer diameter of 7 mm and a length of 47 mm. The miniature X-ray tube is operated in a negative high-voltage mode in which the X-ray target is electrically grounded. In addition, X-rays are generated only to the teeth directions using a collimator while X-rays generated to other directions are shielded. Hence, the X-ray tube can be safely inserted into a human mouth. Using the intra-oral X-ray tube, a dental radiography is demonstrated where the positions of an X-ray source and a sensor are reversed compared with a conventional dental radiography system. X-ray images of five neighboring teeth are obtained and, furthermore, both left and right molar images are achieved by a single X-ray shot of the miniature X-ray tube.
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