Radioisotope renography as a renal function test in the newborn.

Isotope renography has been carried out in 32 babies with neurogenic bladder due to spina bifida or with other urological lesions. The tracings can be interpreted according to the standards applicable to renography in older children. Comparison of renography and intravenous urography showed a close correlation between the two tests, but renography proved to be more sensitive and informative. As renography is easily performed and since the radiation dosage is very small, it is of value in those patients where frequent assessment of the function and emptying capability of each individual kidney is required.