1972
DOI: 10.1159/000192874
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Width Measurements of the Shadow of Right Pulmonary Artery Descending Branch on Medium Size Photofluorograms

Abstract: The width of the shadow of the right pulmonary artery descending branch was measured on medium size photofluorograms (7×7 cm) and on standard chest roentgenograms (35 × 35 cm) obtained from a group of 144 males examined by the two methods in the course of a field survey. For measuring on photofluorograms a reduced scale ruler was employed and this was directly applied to the photofluorographic film using a strong magnifying lens. Failure to measure the diameter of the descending branch occurred with an almost … Show more

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