. The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent; designed for the use of practitioners and students . Fig. 159. M. C. First X-ray tracing (one-third life size). Cardiac. The dotted line indicatesthe cardiac outline as determined by percussion ; the full line (except of course the median lineand the curve indicating the suprasternal notch) and the broken lines, the outlines of the heart anddiaphragm as obtained by the X-rays. The outer full line on the left indicates the position of theheart in expiration; the inner, in full inspiration. The distanc
. The Roentgen rays in medicine and surgery as an aid in diagnosis and as a therapeutic agent; designed for the use of practitioners and students . Fig. 159. M. C. First X-ray tracing (one-third life size). Cardiac. The dotted line indicatesthe cardiac outline as determined by percussion ; the full line (except of course the median lineand the curve indicating the suprasternal notch) and the broken lines, the outlines of the heart anddiaphragm as obtained by the X-rays. The outer full line on the left indicates the position of theheart in expiration; the inner, in full inspiration. The distance between the median line and the leftborder of the heart as obtained by the X-ray examination is slightly exaggerated, owing to the mannerin which the outlines are recorded on the tracing cloth. The error is still greater by percussion. which the line obtained by percussion for the left border is the same asthat by the uncorrected X-ray line, and therefore only one line is agreement in these two Hues may be the result of the position ofthe heart with regard to the chest wall, for when this organ is morenearly in contact with this
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