[An automated evaluation of the functional status of the lungs in patients with central bronchial carcinoma].

In 34 patients with central bronchial carcinoma and in 28 patients with non-tumourous diseases of the bronchopulmonary system we investigated lung ventilation and perfusion with a self-made roentgen-functional method (x-ray cinepulmodensitometry) and an automated evaluation system. It appeared, that the automated evaluation of lung function with its high sensitivity facilitated the detection of small tumour-specific functional changes. Their early detection can improve the differentiation of lung carcinoma from non-tumourous lesions.

[X-ray diagnosis of pulmonary hypertension in mitral valve defects].

Quantitative roentgenologic criteria of lung hypertension are compared with pressure values from intracardiac catheters for 149 patients with mitral disorder. For chronic rheumatic mitral disorders the nature of the valve lesion cannot be determined from the lung vessel pattern. It was found that quantitative criteria facilitate the diagnosis of lung hypertension in 91% of the cases.