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[Noninvasive radiodiagnosis of aneurysms of the thoracic aorta].

The paper is concerned with analysis of the results of X-ray investigation of 45 patients with aneurysms of the distal part of the arch and descending part of the thoracic aorta. Errors were made in 16 of 35 patients (35.6%) before admittance to hospital. X-ray investigation helped to establish correct diagnosis of aneurysm of the aorta in 42 of 45 patients (93.3%) on the basis of the detection of intense additional shadow formation in left pulmonary field, inseparable from the aortic shadow. The use of a new method of ultrasound diagnosis--duplex scanning--made it possible to establish the presence of aneurysm and to determine its sizes as well as to visualize the relation of the left subclavicular artery to aneurysm in 17 of 21 patients. CT-semiotics of aneurysms of the descending part of the thoracic aorta consisted in its dilatation over 3.5 cm, wall calcification, thrombosis of the cavity and change of the adjacent structures. Basing on the analysis of these signs correct diagnosis was established in 34 of 35 examinees (97.1%).