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orthopantomography [orthopantomography 词源字典]: "A modification of pantomography in which the X-ray beam is kept perpendicular to the jaws, producing a flat image of both jaws and their teeth", 1950s. From ortho- + pantomography. Compare orthopantomogram, orthopantomograph.[orthopantomography etymology, orthopantomography origin, 英语词源]
pantomography: "A form of tomography for obtaining radiographs of a curved surface, specifically of the teeth and jaws, by rotation of the body and film during exposure", 1950s. From pan- + tomography. Compare pantomographic.
orthopantomograph: "A trademark for: an instrument for performing orthopantomography", 1950s. From ortho- + pantomograph. Compare orthopantomogram, orthopantomography.