The clinician is interested in roentgenograms of a child's heart, largely because he hopes to determine by the size and shape of the heart whether physical conditions have pathologic significance. It would be equally important to be able to say that a heart of a given shape is definitely normal or pathologic. We have computed statistics for the normal size of the heart in children of various ages and for the normal relationships between the transverse width of the heart, height and the width of the chest. We have also attempted a classification of the shapes of normal hearts. Many studies of this kind have been made on adult hearts. The literature on the size of children's hearts is not abundant, and a considerable amount of the work was done on small groups and on children in clinics who did not have obvious organic heart disease.
This study was made
LINCOLN EM, SPILLMAN R. STUDIES ON THE HEARTS OF NORMAL CHILDREN: II. ROENTGEN-RAY STUDIES. Am J Dis Child. 1928;35(5):791–810. doi:10.1001/archpedi.1928.01920230041006
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