CT volumetry is superior to nuclear renography for prediction of residual kidney function in living donors.

Published

Journal Article

Living kidney donor evaluation commonly includes nuclear renography to assess split kidney function and computed tomography (CT) scan to evaluate anatomy. To streamline donor workup and minimize exposure to radioisotopes, we sought to assess the feasibility of using proportional kidney volume from CT volumetry in lieu of nuclear renography. We examined the correlation between techniques and assessed their ability to predict residual postoperative kidney function following live donor nephrectomy. In a cohort of 224 live kidney donors, we compared proportional kidney volume derived by CT volumetry with split kidney function derived from nuclear renography and found only modest correlation (left kidney R(2) =26.2%, right kidney R(2) =26.7%). In a subset of 88 live kidney donors with serum creatinine measured 6 months postoperatively, we compared observed estimated glomerular filtration rate (eGFR) at 6 months with predicted eGFR from preoperative imaging. Compared to nuclear renography, CT volumetry more closely approximated actual observed postoperative eGFR for Chronic Kidney Disease Epidemiology Collaboration (J-test: P=.02, Cox-Pesaran test: P=.01) and Mayo formulas (J-test: P=.004, Cox-Pesaran test: P<.001). These observations support the use of CT volumetry for estimation of split kidney function in healthy individuals with normal kidney function and morphology.

Full Text

Duke Authors

Cited Authors

  • Barbas, AS; Li, Y; Zair, M; Van, JA; Famure, O; Dib, MJ; Laurence, JM; Kim, SJ; Ghanekar, A

Published Date

  • September 2016

Published In

Volume / Issue

  • 30 / 9

Start / End Page

  • 1028 - 1035

PubMed ID

  • 27396944

Pubmed Central ID

  • 27396944

Electronic International Standard Serial Number (EISSN)

  • 1399-0012

Digital Object Identifier (DOI)

  • 10.1111/ctr.12784

Language

  • eng

Conference Location

  • Denmark