Biomedical subjects
Publications and source records attributed to J A Beyers.
A new sign of pneumomediastinum (mediastinal emphysema), namely a visible wall of a main bronchus as seen in the mediastinum on frontal radiographs of the chest, is described. This sign was present in eight out of 20 random cases of pneumomediastinum in adolescents and adults.
Facilities for magnetic resonance imaging (MRI) have been available in South Africa since November 1985. This article summarizes our experience with this new imaging modality, illustrates normal anatomical features and pathological conditions in sagittal, coronal and axial planes, and compares MRI with computed tomography scans of the same regions.
Different approaches to the analysis of radiographs of the lungs are briefly discussed. A systematic routine is proposed, outlined and briefly motivated. It is emphasized that radiological findings must be correlated with clinical findings if meaningful conclusions are to be drawn.
A very brief review is given of the pathology of primary pulmonary tuberculosis. Numerous characteristic, but not pathognomonic, radiological appearances of primary pulmonary tuberculosis are briefly described and some of them are illustrated. The final diagnosis, however, depends on correlating the radiological picture with the clinical picture and special investigations.
A short review is given of the anatomy of the pulmonary arterial system and of the bronchial arterial system. The normal vascular pattern of the lung as well as the altered vascular pattern under a number of abnormal circumstances is described.
An approach to the recognition of lesions on chest radiographs is outlined. Four basic groups of abnormalities by means of which lesions can be recognized are mentioned and are briefly described, namely an opacity, an area of increased translucency, a combination of an opacity and an area of increased translucency, and, especially, an alteration in normal radiological anatomy.
A clinical classification embracing most of the causes of pulmonary oedema is given, as well as a radiological classification, and the different ways in which pulmonary oedema may present radiologically are briefly described.
Conventional radiology is a routine examination in the diagnosis and management of cardiac diseases. A brief review of its value and limitations is given. A number of technical and/or physiological factors which may influence the cardiopulmonary configuration are mentioned. An approach is suggested for analysis of radiographs of the heart.