著者

金場 敏憲

出版者

公益社団法人日本放射線技術学会

雑誌

日本放射線技術學會雜誌 (ISSN:03694305)

巻号頁・発行日

vol.38, no.1, pp.16-26, 1982-01-01

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Standard base lines in skull radiography are important technical factors for high quality reproduction of a radiogram. However, in current texbooks of radiology and radiography, at least 11 base lines have been described for skull radiography. The definition of these base lines has been by no means uniform or precise among the various authors. In our attempt for some standardization, two fundametal base lines, the ABL and the OMBL were chosen and upon a study of their histological development, the present status of their clinical use in various countries were analyzed. We also investigated about the reference point considered in those base lines. The difference in the angle taken for the ABL and the OMBL estimation has been described in the literature, as being 10 degree, but we found that this angle measured over the skin surface varied widely among individuals ranging from 9 to 16 degree. Thus, we concluded that accurate standardization of radiographic base lines are essential for an improvement of skull radiography. Our results indicated the need to recognize existing differences on reference points or lines taken on the skin surface or over the bone position.