title: Zonography: method of choice in urography.
abstract: Using zonograms in urography instead of the ordinary films and tomograms makes it possible to visualize the caliceal system as well as the renal contours with 1--2 exposures and limit the total number of exposures to 3--4 and thus markedly reduce the gonad radiation dosis.
mesh_terms: D006066:Gonads / Q000528:radiation effects; D006801:Humans; D007682:Kidney Pelvis / Q000000981:diagnostic imaging; D011829:Radiation Dosage; D014056:Tomography, X-Ray / Q000379:methods*