Fractals in uroflows.
Analysis of normal uroflow curves with two different methods give evidence that the uroflow is fractal. It is possible to synthesize uroflow-like curves with the fractal interpolation technique of Barnsley, which may become a way to characterize clinical measurements. Differences between real and synthetic uroflow curves appear when the Lyapunov exponent (a measure of complexity) is calculated: the synthetic curves appear chaotic in this respect, as opposed to the real flow curves.
Mortensen
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Surgical Dept. D1, Copenhagen County Hospital, Glostrup, Denmark.
D006801:Humans; D008433:Mathematics; D014563:Urodynamics / Q000502:physiology*