. The American journal of roentgenology, radium therapy and nuclear medicine . ose with relation to the a^■erage humaniigure. Anatomies showing cross-sections arenow available, but the sections were madefrom dead subjects, and present a \ariablc \ arying in weight between 100 and 200 lbs.;in height, between 64 and 74 in.; and in age,between twenty-five and forty years. Ofeach subject, a series of careful contourmeasurements at different le\e!s was ob^■ious reasons, the levels selectedcorrespond to prominent and easily recog-nizable surface landmarks. Figures i and2 show the levels at
. The American journal of roentgenology, radium therapy and nuclear medicine . ose with relation to the a^■erage humaniigure. Anatomies showing cross-sections arenow available, but the sections were madefrom dead subjects, and present a \ariablc \ arying in weight between 100 and 200 lbs.;in height, between 64 and 74 in.; and in age,between twenty-five and forty years. Ofeach subject, a series of careful contourmeasurements at different le\e!s was ob^■ious reasons, the levels selectedcorrespond to prominent and easily recog-nizable surface landmarks. Figures i and2 show the levels at which the contourswere made. The number of levels measured andcharted is thought to be sufficient formost purposes, although in foreign body Anatomical Cross-Section Charts in Estimating X-Ray Dosage 13- localization, it might be desiraljle in some contour tracings, and also the average cases to have a larger number to cover contour traced from it. intervening points. The method employed in making the The contours at each level were then contour tracings was as follows:. Fig. 4. Contour and cross-section of the average female at the level of the hiwcrportion of the fourth intercostal space.
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