Study of the Changes of the Heart's Shadow During Systole and Diastole as Shown by the X-Ray (Classic Reprint) - Hardcover

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Excerpt from Study of the Changes of the Heart's Shadow During Systole and Diastole as Shown by the X-Ray

The lack of knowledge of the x-ray shadow changes of the heart during systole and diastole, and even a much less knowledge of the heart's actual output, has made this research problem a very interesting one, not only from a purely scientific standpoint but from a clinician's standpoint as well. The object of this paper is to set forth the results obtained of determining the volume changes of the heart by means of measuring the difference in shadow area of the heart during systole and diastole. This important problem has cpened itself to attack by the recent research work of Dr. Bardeen whose exhaustive work upon this subject has thrown much light upon the question of volume as related to the heart shadow area. The shadow area obtained by actual x-ray work were compared to his standard table of shadow area and volume, and thus a working basis was created for the results obtained.

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