Angiography is of great value in the diagnosis and treatment of pulmonary disease. Celis (1) in 1946 described his technic of pulmonary angiography, and in 1951 angiographic findings in pulmonary disease were reported by D otter and Steinberg (2). Lyons (3) in 1957, after angiographic examination of over 600 patients with pulmonary disease, concluded that study of the pulmonary vasculature by angiocardiography was frequently a helpful procedure with rewarding diagnostic information. Pacheco and del Castillo (4) found that angiographic studies following pulmonary resection gave valuable intelligence as to the functional state of the pulmonary vessels and mediastinum. Cicero et al. (5, 6) have also done selective angiography with excellent results. When a pathological process in the lung causes obstruction of the arteries, examination of the veins becomes impossible if one depends on the forward flow of the contrast material. A review of the literature did not disclose a technic for direct opacification of ...