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Plot of the volume Vj (with its first and second derivatives) of the wave-front connected components, as a function of the iteration number i in the wave-front propagation process. Branch points (the carena and the following bifurcations) and flooding into the lung parenchyma are evident. Appropriate conditions on the values of Vj(i) derivatives are used to stop the growth process when the wave-front enters the lung parenchyma.
