In a series of 2,600 cases at the Christ Hospital, drip infusion pyelography has been demonstrated to be as safe and well-tolerated as standard-dose pyelography; and drip infusion pyelography produces much better visualization. The improvement in visualization of the collecting systems led to a 30% reduction in the number of retrograde pyelograms performed. Drip infusion pyelography has become our routine method of examining the urinary tract with contrast materials.
Pratt AD, White WW. Drip Infusion Pyelography. JAMA. 1967;202(6):542-543. doi:10.1001/jama.1967.03130190148030