[en] Renal scintigraphy is one of the most common performed nuclear medicine procedures mainly in childhood. This review article describes in detail indications, preparation, data acquisition, data analysis and interpretation of renography using ^99mTc-MAG3 including indirect reflux study (radionuclide cystography) and of static renal scintigraphy using ^99mTc-DMSA. The current controversies in interpretation were considered, especially the interpretation of a reduced or delayed drainage. Pitfalls in performance and analysis and the avoidance were addressed. Renography is a routine examination that allows a visual and quantitative evaluation of various aspects of renal function. (orig.)