Restricted accessLetterFirst published online 2012-02
Re: Reduced Radiation Exposure with the Use of an Air Retrograde Pyelogram During Fluoroscopic Access for Percutaneous Nephrolithotomy (From: Lipkin ME,Mancini JG,Zilberman DE,et al. J Endourol 2011;25:563–567)
von LichtenbergA, DietlenH. The demonstration of the kidney and ureter with x-ray following the introduction of oxygen. Munchen med Wchnschr, 1911; 58:341–344.
