FIGURE 2. Histograms of NORA values for normal kidneys (at 20 min) and for kidneys with pelviureteric junction stenosis that had undergone surgery (at 20 min, at end of furosemide [Lasix; Hoechst Marion Roussel SA, Brussels, Belgium] acquisition, and after micturition). Five categories of NORA values (0–1, 1–2, 2–3, 3–4, and 4–5) are given on abscissa; number (Nb) of kidneys for each category is given on ordinate.

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