title: On the measurement of cranial thickness at nasion on cephalographs.
abstract: Cranial bone thickness at nasion is difficult to measure by the conventional method of drawing a line at right angles to the tangent at nasion on the outer table. The difficulty arises from a lack of uniformity of the arc in this region. The proposed use of a constructed line, drawn at 30 degrees to the anterior projection of the Frankfort horizontal plane, provides an accurate, easily reproducible, and compatible alternative method of measurement.
mesh_terms: D000328:Adult; D002508:Cephalometry / Q000379:methods*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D011859:Radiography; D012886:Skull / Q000000981:diagnostic imaging*