For years busily practicing radiologists have surrounded their film reading desks with framed or mounted illustrations, diagrams, and tables to which they could refer for specific information regarding the size, position, and other characteristics of various anatomic structures. The same practice has been followed by colleagues in other specialties who depend heavily on radiologic evidence in their work. A great service has been provided to both groups through the publication in one volume of some 56 classified groups of radiologic measurements for rapid and accurate reference.
After a wisely included consideration of the distortion factor to be expected when analyzing roentgenograms, the subject matter has been divided into nine anatomic categories, the largest of which deals with the skeletal system. All types of measurement ( the location of the pineal body, the time of appearance of various skeletal ossification centers, the size of the heart, the length and caliber of the