Quachtran Benjamin, Hamilton Robert, Scalzo Fabien
Department of Computer Science and Neurology, University of California, Los Angeles (UCLA).
Neural Analytics, Inc. Los Angeles, CA.
Proc IAPR Int Conf Pattern Recogn. 2016 Dec;2016:2491-2496. doi: 10.1109/ICPR.2016.7900010. Epub 2017 Apr 24.
Intracranial Hypertension, a disorder characterized by elevated pressure in the brain, is typically monitored in neurointensive care and diagnosed only after elevation has occurred. This reaction-based method of treatment leaves patients at higher risk of additional complications in case of misdetection. The detection of intracranial hypertension has been the subject of many recent studies in an attempt to accurately characterize the causes of hypertension, specifically examining waveform morphology. We investigate the use of Deep Learning, a hierarchical form of machine learning, to model the relationship between hypertension and waveform morphology, giving us the ability to accurately detect presence hypertension. Data from 60 patients, showing intracranial pressure levels over a half hour time span, was used to evaluate the model. We divided each patient's recording into average normalized beats over 30 sec segments, assigning each beat a label of high (i.e. greater than 15 mmHg) or low intracranial pressure. The model was tested to predict the presence of elevated intracranial pressure. The algorithm was found to be 92.05± 2.25% accurate in detecting intracranial hypertension on our dataset.
颅内高压是一种以脑内压力升高为特征的疾病,通常在神经重症监护中进行监测,并且只有在压力升高后才会被诊断出来。这种基于反应的治疗方法在检测失误的情况下会使患者面临出现更多并发症的更高风险。颅内高压的检测一直是近期许多研究的主题,旨在准确描述高血压的成因,特别是检查波形形态。我们研究了使用深度学习(一种分层形式的机器学习)来对高血压与波形形态之间的关系进行建模,使我们能够准确检测高血压的存在。来自60名患者的数据显示了半小时时间跨度内的颅内压水平,用于评估该模型。我们将每位患者的记录划分为30秒时间段内的平均归一化搏动,为每个搏动分配一个高(即大于15毫米汞柱)或低颅内压的标签。该模型经过测试以预测颅内压升高的存在。在我们的数据集中,该算法检测颅内高压的准确率为92.05±2.25%。