Renal column(Bertini) Renal papilla enal aa Urography Minor calyx Major calyx● 1-2 mins:renal parenchyma Renal sinus Renal Renal hilum● 15-30 mins:calyx,pelvis pyran Renal pelvis Release pressure:ureter, bladder Renal corte Minor calyx Major calyx Pelvis Contour Ureter ● Bladder Urography • 1-2 mins：renal parenchyma • 15－30 mins：calyx, pelvis • Release pressure：ureter, bladder • Minor calyx • Major calyx • Pelvis • Contour • Ureter • Bladder