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[Enhancement of the information value of kidney scintigraphy using 99m Tc-DMSA].

A method of high frequency image filtration improving the quality of imaging, and more precise renometry with measurement of the total count and the level of RP kidney accumulation were used for raising the informative value of the results of renal scintigraphy with 99m Tc-DMSA. 54 patients with unilateral pyelonephritis, 46--with bilateral pyelonephritis, 15--with nephroptosis, and 10 healthy persons were examined. Informative values were calculated on the basis of the results of these investigations. The sensitivity of routine renometry was 0.88, its specificity--0.27 and precision--0.78; the same indices for routine static scintigraphy were 0.88; 0.4 and 0.84; for modified renal investigations--0.98; 0.77 and 0.96, respectively. The results of the investigations have shown that the use of scintigraphy with improved quality of kidney images in parallel with modified renometry raises the informative value of renal studies with 99m Tc-DMSA and precision of diagnosis of renal parenchymal lesions.