| Accession number;99A0737868 |
| Title;Evaluation of the objective plane of cross-sectional tomography of the jaw. |
| Author;OKUMURA SHINJI(Aichi Gakuin Univ., Dent. Affil. Hosp.) MORI AKIKO(Aichi Gakuin Univ., Dent. Affil. Hosp.) OSAKI CHIAKI(Aichi Gakuin Univ., Dent. Affil. Hosp.) NAITO MUNETAKA(Sch. of Dent. Aichi Gakuin Univ.) KAWAMATA AKITOSHI(Asahi Univ., Sch. of Dent.) SHIOJIMA MASARU(Matsumoto Dent. Coll.) ARIJI EIICHIRO(Sch. of Dent. Aichi Gakuin Univ.) |
Journal Title;Dental Radiology
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Journal Code:Z0608B
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ISSN:0389-9705
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VOL.39;NO.2;PAGE.128-134(1999)
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| Figure&Table&Reference;FIG.5, REF.17 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The purpose of this report was to propose a method to determine the objective planes of cross-sectional tomography in relation to the dental arch using a panoramic machine with a function of linear tomography. This method was based on the means of evaluating the exposure angles in linear tomography, which were described in the report by the International Commission on Radiation Units and Measurements(ICRU). A special device consisting of five thin slits measuring 0.1mm in width was designed for this purpose. This device was set at the position of the primary slit of the examined machine. The thin slits were arranged in radiated position along the X-ray beam from the primary slit. The film cassettes for evaluation were set on 3mm-thickness styrene form plates in an exposed area using a tripod. The objective planes were determined by connecting the points, which corresponded to the apices of the triangles facing each other on the exposed film. The objective planes were determined in 16 areas from the central incisor to the third molar on both the left and right sides. The measured planes corresponded closely with the simulated planes. (author abst.) |
