[Inhalation scintigraphy of the lungs and its clinical aspects]

The aim of the work was to examine the new Taplin's system for the production and inhalation of radioactive aerosol in routine diagnostic application. For that purpose a new commercially produced system of the firm CADEMA was used with a small modification which made possible its repeated application. The advantage of this system is a high level of aerosol particles of optimal size from 0.7-0.8 micron and inhalation is carried out only on the basis of air circulation caused by natural breathing. Total of 125 inhalation scintigrams was made. The results show that one can get aerosol of a high quality the distribution of which does not depend significantly on the sort of material marked with 99mTc. The distribution itself is even and scintigrams of high quality can be obtained. Inhalation scintigram of high quality combined with a perfusion scintigram enables reliable estimation of regional relationship between ventilation and perfusion of the lungs which is of special interest in the diagnostic of lung thromboembolism.