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1: Nuklearmedizin. 1994 Dec;33(6):244-7.Links

Evaluation of obstructed kidneys by discriminant analysis of 99mTc-MAG3 renograms.

González A, Jover L, Mairal LI, Martin-Comin J, Puchal R.

Laboratory of Biophysics and Bioengineering, Faculty of Medicine, University of Barcelona, Spain.

This study sought to develop a method of improving the differential diagnostic between healthy and obstructed kidneys using only parameters derived from the 99mTc-MAG3 renogram. The analysis included data from 46 healthy and 36 obstructed kidney units. The parameters calculated were: mean transit time (MTT), time at 20% of the initial height of the renal retention function (T20) and time to peak of the renogram (TP). A discriminant analysis was carried out to obtain a discriminant function in order to differentiate between the two groups. The best results were obtained using the function: (2.5629 InT20) + (2.1280 In TP) -27.1224 which correctly classified 97.56% of the cases, giving a sensitivity of 94.44% and a specificity of 99.99%.

PMID: 7854921 [PubMed - indexed for MEDLINE]