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Fig. 7A —Relative signal-versus-time curves for two studies from
patient shown in Figures 6A,
and 6B. Initial study when
infant was 3 months old (A) shows delayed crossover point. By time of
second study when infant was 9 months old (B), crossover point has
become symmetric, suggesting that intracortical pressure has returned to
normal. Distal cortical peak is preserved in both studies, as well as
concentration of contrast material in medulla and loop of Henle. Note mild
decrease in amplitude of cortex on right, indicating slight impairment in
ability of this kidney to extract and concentrate contrast material from
vasculature.
