[Determination of the amount of functioning renal parenchyma based on multipositional scintigraphy data]. / Opredelenie kolichestva funktsioniruiushchei parenkhimy pochek po dannym polipozitsionnoi stsintigrafii.

The paper is concerned with mathematical calculations of two methods to determine the amount of the functioning renal parenchyma using the polyposition statistic scintigraphy data. These methods are used to determine the depth of kidney location from the body surface in the lumbar region. An analysis of polyposition scintigraphy of 122 patients without tumor lesion has shown that in 41.7% of the cases the difference in the depth of location was over 1 cm. in 13.1% over 2 cm and in 5.7% over 3 cm. If one of the kidneys is shifted forward by 3 cm, in scintigraphy gamma-irradiation from this kidney for 99mTc will be weakened more than 1.5 times, and for 197Hg more than 1.75 times. It is only in renal insufficiency and in obese patients that the method of estimated RPD accumulation in the kidneys with regard to lateral projections is the best as compared to that using the results of scintigraphy of front and back projections.

[Assessment of the passage of urine in the upper urinary tract based on radionuclide renographic data]. / Otsenka passazha mochi v verkhnikh mochevykh putiakh po dannym radionulkidnoi renografii.

A group of 516 patients was studied using the routine renographic method. It can be admitted that 3 min after registration of maximum radioactivity in the kidney the curve of the radionephrogram in the interval of 7 min and that of radioactivity in the cardiac area within the same time interval are similar. Proceeding from this supposition coefficients of intensity of hippuran comparative outflow from the kidneys (K), from the kidney and blood (D) have been proposed. Using K and D coefficients the criteria of an extent of urinary passage delay from the upper urinary tract were determined. It has been established that renal function increases with age; therefore, age should be taken into consideration while assessing renographic results. In nephroptosis due to kidney forward shift the renal function index is to be understated. Renography has been shown advantageous in the evaluation of urine function and passage before chromocystoscopy in cancer patients.