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Studies on Cardiac Measurements by Means of Chest Roentgenogram Chapter 1. Studies on Cardiac Measurements, Comparing with Fluorography (6×6cm. in Size) and Teleoroentgenography

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1. The cardiac measurements obtained by teleoroentgenography were similar to those of previous reports in comparison. 2. In the cardiac measurements it was noted that the longitudinal diameter (L) to stature, the transverse (Tr) and the longitudinal diameter to weight and the transverse rather than the longitudinal diameter to chest girth were increased proportionally. 3. The fluorograms (6×6cm. in size) represented a close correlation with the teleorentgenograms, although an acurate convertion rate was difficult to determine because of variable conditions. 4. It was supposed that the cardiac measurements by means of fluorograms (6×6 cm. in size) could be applied in clinical use with considerations of age, sex, stature, weight and girth of the chest of patients on those the fluorographic cardiac measurements showed similar alteration to teleoroentgenographic ones. The cardiac measurements by means of fluorograms revealed that the rightsided half of the transverse diameter (Mr) was ranging 0.6 to 0.7 cm., 1.3 to 1.4 cm. in the leftsided half of the transverse diameter (Ml), 1:2 in the ratio of Mr and Ml, 1.9 to 2.1 cm. in the transverse diameter (Tr), 2.2 to 2.5 cm. in the longitudinal diameter (L) and 1.0: 1.1 in the ratio of Tr and L. The hight of the left ventricular chord (Bh) was ranging between 0.6 and 0.17 cm.

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