[en] Published in summary form only

[en] The study of the labelling of planaria with sup(99m)Tc shows that the incorporation of radioactivity in this platyhelminth increases with an increase in SnCl sub(2) concentration from 0.13 to 1.3 μM, reaching a plateau in the range of 1.3-130 μM them decreasing with 1300 μM. At concentrations of 1.3 and 13 μM SnCl sub(2), a stronger binding of sup(99m)Tc was obtained. The biological viability of the labelled planaria was not altered when the described methodology was used. The advantage of this new labelling technique is that it is possible to obtain a platyhjelminth preparation labelled with a radionuclide that is very cheap, is easily available and is a gamma emitter with a photon energy of 140 KeV. (author)

[en] Published in summary form only

[en] Published in summary form only

[en] Twenty-three patients with gastroesophageal reflux and endoscopic diagnosis of esophagitis were submitted to dynamic reflux scintigraphy with ^99m Tc. Twelve healthy individuals constituted the control group. Radioactive reflux was found in nineteen of 23 patients (82.6%) with esophagitis and in two (16.6%) patients of the control group. Quantitative analysis by reflux index (RI) in nine controls and in 10 patients resulted in RI=0.67% with standard deviation of 0.27% and 2.90% with standard deviation of 0.54%, respectively. The difference of the means is significant to the level p<0.005. The results draw to the conclusion that reflux scintigraphy has a good sensitivity for the diagnosis of reflux in patients with esophagitis. (author)

[en] The present paper summarizes basic anatomy and physiology of the lacrimal drainage system, the disorders of lacrimal organs and lacrimal drainage passages, and possible diagnostics and therapy. Special attention is paid to the issues related to infantile age, in particular the congenital obstruction of lacrimal drainage passages. (author)

[en] Published in summary form only

[en] Published in summary form only

[en] Published in summary form only

[en] The selective spleen scintigraphy can be the best examination when it is necessary to study only the spleen. For this purpose, we described a simplified methodology to label in vitro red blood cells with technetium-99m with posterior thermic denaturation. Using this technique is possible to obtain spleen image with a reduced number of manipulations, when compared to other similar techniques. (author)