单词	cephalometer
释义	cephalometer /sefəˈlämədər / noun A device for measuring the human head.The nasion rest on the cephalometer used to expose the cephalometric radiographs was measured to assist in determining the magnification of the radiographic images.... Lateral cephalograns were performed with the subject standing with his head in cephalometer in a natural head position and teeth in the intercuspal position. The development of the Broadbent - Bolton cephalometer and the history of its evolution to common usage are familiar to all orthodontists.
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