Dynamic 99mTc-DTPA renal gammagraphy with glomerular filtration rate determination.

Using the method of 99mTc-DTPA (diethylenetriaminepentaacetic acid), sequential renal gammagraphy with subsequent glomerular filtration rate determination by means of a gamma-camera and computer, a total of 285 patients with suspected renal and urinary tract diseases, subjects after surgery on these organs or those serving as controls after drug therapy were examined. With the help of a modified computer user's program, a study was designed to perform quantitative evaluation of some functional parameters as well as determination of total and separate glomerular filtration rate values by 99mTc-DTPA according to Gates. The benefits of the method employed in our study are that it is non-invasive, rapid, atraumatic, with low exposure to radiation while offering a broad range of applications in routine diagnostic practice of nephrology, and especially so in paediatric patients.