Width measurements of the shadow of right pulmonary artery descending branch on medium size photofluorograms.
D005471:Fluoroscopy; D006801:Humans; D006976:Hypertension, Pulmonary / Q000000981:diagnostic imaging*; D008297:Male; D008400:Mass Chest X-Ray; D008722:Methods; D010781:Photography; D011651:Pulmonary Artery / Q000000981:diagnostic imaging*; D011660:Pulmonary Heart Disease / Q000000981:diagnostic imaging*