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Fig. 3 | Critical Care

Fig. 3

From: Relationship between the shape of intracranial pressure pulse waveform and computed tomography characteristics in patients after traumatic brain injury

Fig. 3

Schematic representation of the methodology to obtain the pulse shape index (PSI). Classification results for individual waveforms are obtained from full intracranial pressure (ICP) recording using a deep neural network model. PSI represents the mean class number in a 5-min moving window (shifted every 10 s) and is expressed as the weighted sum of class numbers i with weights corresponding to the fraction of pulses assigned to given class pi, where i = {1, 2, 3, 4}, due to the discrete (rather than continuous) scale of class numbers

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Critical Care

ISSN: 1364-8535