Zonography: method of choice in urography.
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.
D006066:Gonads / Q000528:radiation effects; D006801:Humans; D007682:Kidney Pelvis / Q000000981:diagnostic imaging; D011829:Radiation Dosage; D014056:Tomography, X-Ray / Q000379:methods*