ABSTRACT
Objective To evaluate the diagnostic value of 99mTc-EC dynamic renography for renal scars in children with urinary tract infection. Methods The 99mTc-EC and 99mTc-DMSA renographic results of 67 children diagnosed with urinary tract infection were retrospectively studied. In comparison with 99mTc-DMSA cortical images, the value of 99mTc-EC dynamic renogra-phy for the diagnosis of urinary tract infection, hydronephrosis and renal scars was analyzed. Results The sensitivity and speci-ficity of the initial 2 minutes summed images in the 99mTc-EC images for the diagnosis of renal scars was 80.28%and 88.89%re-spectively, and the likelihood ratio was 7.23. Renal scars were more likely to be formed in patients with obstructed upper urinary tracts, as compared with patients with unobstructed upper urinary tracts and unsmooth upper urinary tracts (P0.05). Conclusions For children with urinary tract infection, the diagnostic sensitivity and specificity of the initial summed images of 99mTc-EC dynamic renography are high. Furthermore, the excretion of upper urinary tract showed by 99mTc-EC dynamic renogra-phy is valuable for the diagnosis of renal scars.