py·e·log·ra·phy 
(pī′ə-lŏgrə-fē)
(pī′ə-lŏgrə-fē)n.
X-ray photography of the renal pelvises and the urinary tract in which visualization is enabled by the injection with a radiopaque contrast medium either into the bloodstream or into the ureter.
[Greek puelos, basin; see PYELITIS + -GRAPHY.]
py′e·lo·graphic (-lə-grăfĭk) adj.