Abstract
Introduction: Using renography, we evaluated the function of both the kidneys and neobladder of 20 patients who underwent ileal bladder substitution. Methods: The patients were measured for renal and neobladder function with renography using <sup>99m</sup>Tc MAG3. Renal function was assayed in every renal unit using O’Reilly patterns. Voiding function was estimated using radioisotope counts for the reservoir. Results: Thirty-two of 37 renal units had normal renograms. Five renal units showed non-obstructive renograms. The percentage of total residual urine (RU) in the reservoir was 30% and more in 6 patients, 10–30% in 8, and <10% in 6. In 7 of 12 patients, the data on estimated RU correlated with the data on measured RU. However, in 5 patients, the data on estimated RU increased more in quantity than the data on RU measured at another time. Conclusions: In patients with bladder substitution the functions of both the kidneys and neobladder could be evaluated in a single renography.
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