Background correction factors in renography with single probe detectors

Abstract

The background correction factor was determined with [¹³¹I]albumin, F_A, in eighty-six patients with various nephro-urological diseases, with [¹³¹I]hippuran in eighty unilaterally nephrectomized patients (F_H), and in twenty-five patients in whom the renogram showed background configuration, F_{H, B}, F_H was approximately the same on the left and the right side, the mean values being 1.39 and 1.35, respectively. F_A showed a significant side difference, the mean values being 1.30 and 1.19 on the right and left side, respectively. F_{H, B}, was higher than F_H, which shows that some uptake of hippuran can take place in apparently non functioning kidneys.

Key Words:

• [¹³¹I]albumin
• blood background subtraction
• [¹³¹I]hippuran
• renography