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Pseudo-Bayesian Model-Based Noninvasive Intracranial Pressure Estimation and Tracking.

Syed M Imaduddin, Andrea Fanelli, Frederick W Vonberg

    IEEE Transactions on Bio-Medical Engineering
    |September 20, 2019
    PubMed
    Summary

    This study introduces a novel noninvasive method for estimating intracranial pressure (ICP) by integrating a model-based approach with probabilistic frameworks. The technique accurately predicts ICP, offering a significant advancement for patient-specific monitoring.

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    Area of Science:

    • Biomedical Engineering
    • Neuroscience
    • Medical Physics

    Background:

    • Intracranial pressure (ICP) monitoring is crucial for managing neurological conditions.
    • Current invasive methods carry risks and limitations.
    • Development of noninvasive ICP estimation techniques is a significant clinical need.

    Purpose of the Study:

    • To propose and validate a novel noninvasive method for estimating intracranial pressure (ICP).
    • To mitigate uncertainties in data and modeling for improved ICP estimation.
    • To provide a robust, continuous, and patient-specific ICP determination approach.

    Main Methods:

    • A model-based approach using a probabilistic framework was developed.
    • A first-order model of cerebral vasculature related arterial blood pressure (ABP) and cerebral blood flow velocity (CBFV) to ICP.
    • A two-step process transformed measurement errors into likelihoods for ICP estimation, incorporating baseline and autoregulation dynamics.

    Main Results:

    • The noninvasive ICP estimation method demonstrated a bias of 0.6 mmHg and a root-mean-squared error of 3.7 mmHg in pediatric patients.
    • Performance was validated on a dataset of thirteen pediatric patients with various pathological conditions.
    • The results indicate accuracy suitable for clinical decision-making.

    Conclusions:

    • The proposed method offers a significant advancement in noninvasive ICP determination.
    • The technique shows promise for robust, continuous, and patient-specific ICP monitoring.
    • This approach could enhance the management of neurological conditions requiring ICP assessment.