Publications by authors named "I O Tomashevskiĭ"

Objective: To study the diagnostic importance of a new Indis software package for the postprocessing of the results of radionuclude examinations (Center for Information and Diagnostic Systems, St. Petersburg, Russia) when analyzing the results of lacrimal scintigraphy.

Material And Methods: Dynamic lacrimal scintigraphy was carried out in 6 volunteers (12 eyes) and 20 patients (32 years) with dacryostenosis.

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Objective: To explore the capabilities of single-photon emission computed tomography (SPECT) in combination with x-ray computed tomography (SPECT/CT) in the study of the anatomy and drainage function of lacrimal passages.

Material And Methods: Twelve scans were carried out in 6 healthy volunteers and in patients with different lacrimal drainage disorders (dacryostenoses, varying obstructive lacrimal passage, dacryocystitis and post-dacryocystorhinostomy). Sodium pertechnetate (99mTc) solution and a radiocontrast agent were instilled into the conjunctival sac during the study.

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A new noninvasive method with a very low local radiation exposure (less than 2 mSv) is based on the principle of recording and assessment with an externally located gage of characteristic radiation of stable iodine of the thyroid with the energy of 28 KeV, excited by externally located sources of irradiation. The method was given the name of radiofluorescent assay (RFA) or x-fluorescent scanning of the thyroid. A series of units and methods of investigation were developed for RFA.

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The levels of carbohydrate metabolism were examined in 329 inhabitants of Lvov (age: from 6 to 68 years). Determination of the pyruvate level, pyruvate dehydrogenase activity of the blood on the 120 minute after carbohydrate meal allowed to establish in healthy persons four-modal levels of distribution of the content of pyruvate in the capillary blood. These levels correspond to normal tolerance to glucose, increased glucose tolerance (hyperinsulinism), potential glucose tolerance disorders (diabetic type).

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A pyruvate test for glucose tolerance was used during prophylactic medical examination of 47 students and 27 children without risk factors, 54 students with risk factors, 31 patients with type I diabetes mellitus and 220 construction workers in order to test a new methodological basis for the strategy of primary prevention of diabetes mellitus. The investigations showed the presence in a general population of 3-modal distribution of a variant of the capillary blood pyruvate level on the 120th min. of a GTT according to physiological glucose tolerance, potential (prediabetic) and actual (diabetic) carbohydrate metabolic derangements.

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