METHOD FOR EVALUATING VIABILITY OF RENAL PARENCHYMA Russian patent published in 2006 - IPC A61B6/00 

FIELD: medicine, urology, nephrology.

SUBSTANCE: the suggested innovation deals with intravenous injecting a radiopharmpreparation (RPP). Activity of this preparation should be pre-estimated with the help of a dose-calibrator. It is necessary to register static scintigrams and calculate the quantity of captured RPP and its distribution. Moreover, one should measure RPP activity in a full syringe and in a syringe after injection with the help of a gamma-chamber. Two hours after injecting RPP one should register scintigrams in posterior and anterior renal projections. At registering static scintigrams one should measure RPP activity right in the site of injection performed for 20 sec and in kidneys at interrupting the registration every 2 min followed by calculating the index of integral capturing RPP quantity (IU) for every kidney by the following formula: IU=U·100/(SF-SE-I), where U - the capture of RPP quantity by kidney in posterior and anterior projections of scinitigrams; SF - the quantity of RPP in a full syringe; SE - the quantity of RPP in a syringe after injection; I - the quantity of RPP in the site of injection. At IU values within 45-70 for every kidney at total IU value being 98-140 in case of availability of 2 kidneys and within 98-140 - in patients with a single kidney it is possible to conclude upon normal viability of renal parenchyma. At IU values being below 45 in case of 2 kidneys and below 98 in case of a single kidney one should diagnose affected viability of renal parenchyma. The application of the suggested innovation enables to increase information value in estimating the quantity of functional renal parenchyma.

EFFECT: higher efficiency of evaluation.

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