CANCUN, MEXICO (UroToday.com) - Coverage of the 25th Annual World Congress of Endourology and SWL - Cancun, Mexico - Wednesday October 31st 2007

Radioisotope renography is the gold standard method to determine differential renal function. However, with its widespread use and familiarity, helical computed tomography may be a more efficient determinant of renal function.

Morrisroe and colleagues from the University of Pittsburgh Medical Center sought to determine if differential renal parenchymal volume could be used as a surrogate for percentage of renal function. They compared CT percentage renal volume from 23 patients, 17 with enhanced CT and 6 with unenhanced CT, to the percentage of renal function from 99cTm-MAG3 scans. They showed a strong correlation (r=0.87, p less than 0.0001, CI 0.68-0.95) between percentage renal function and percentage renal volume in both the enhanced and non-enhanced CT groups. They were also able to show significance in 9 patients with renal function less than 30%.

Session: Stones: Imaging and New Technology
Moderators: Dean Assimos (USA), Andreas Skolarikos (Greece)
Shelby Morrisroe, Erin Gibbons, Alice Tsao, Benjamin Stockton, Kyongtae Bae, Cheng Hong, Christopher Deible, Timothy Averch, Stephen Jackman

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