[X-ray differential diagnosis of focal tuberculosis and peripheral lung cancer].

The paper deals with the differential diagnosis of focal tuberculosis and peripheral lung cancer. It presents data on 25 patients of whom 24 were misdiagnosed as having focal tuberculosis. The main reason for misdiagnoses was the similarity of early X-ray symptoms of the two diseases, namely, upper lobar site, increased and thickened lung pattern and focal shadows against this background.

[An automated method of measuring the area of contrasted bronchi].

An automated method for measuring the area of the contrasted bronchi is described. The method involves two research stages. The first one consists of routine bronchography provided to patients suffering from pulmonary diseases according to indications.

[A method of digital processing of bronchograms].

Digital bronchogram processing is described as a new method in roentgenology. The aim of this method is to improve the visibility of the single morphological detail inside the bronchi lumens and to make the image of the contrast bronchi more easily and clearly seen. It will ease the procedure of measuring the diameters of the respiratory ways and will help to get more accurate datum of bronchi lumens in cases with chronic bronchitis.