대한구강악안면방사선학회

Korean Academy of Oral and Maxillofacial Radiology

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파노라마 촬영기종에 따른 악골내 상 확대의 비교
저자 : 하춘호, 최갑식, 김진수
1991년|21권 2호|Page : 287-296|조회수 881
Full Text : 1991_287.pdf (432.8K)
TI : Comparison of the image magnification in the jaws according to the types of panoramic machines

 AU : Ha CH, Choi KS
 AD : Department of Dental Radiology, College of Dentistry, Kyungpook National University
 SO : JKAOMFR 1991;21(2): 287-296
 ISSN : 1225-049X
 PY : 1991
 LA : KOREAN
 CP : KOREA

 AB : The purpose of this experiment is to compare the vertical and horizontal magnification, and the distortion of the radiographic image according to the types of panoramic machines. Total 70 radiographs, 10 radiographs out of 7 panoramic machines respectively, were taken from the dry skull with met al balls in the periapical areas of the central incisors, the canine, the second premolar, and the second molar in the m axilla and the mandible.
 And the author evaluated the vertical and horizontal magnification degrees, and the distortion degrees of radiographi c images obtained from each panoramic machines. The results were as follows: There were no significant differences in the vertical and horizontal magnification degrees on the various portions of the jaws (p>0.05). But there were higher magnification degrees in the Panoura 10C, Panograph Ⅱ, and Veraview than t hose in other panoramic machines. The lowest average magnification degree was 20.27% vertically, 20.94% horizontally using the Panoradix.
 This highest average magnification degree was 27.64% vertically, 28.48% horizontally using the Panograph Ⅱ. The lowest distortion was shown using the Panoura 10C in the maxilla, but there was not statistically significant dif ference between the panoramic machines in the mandible(p>0.05). There were no differences in the vertical and horizontal magnification degrees according to the types of the rotation centers.

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