Despite widespread using electroencephalography (EEG) and Doppler ultrasound in pediatric neurology clinical practice, there are still no well-known correlations between these methods that could contribute to a better understanding of brain processes and development of neurological pathology. This study aims to reveal relationship between EEG and Doppler ultrasound methods. We compared two cohorts of adults and preschool children with no history of neurological or mental diseases. The data analysis included investigation of EEG and carotid blood flow indexes, which are significant in neurological diagnosis, as well as calculation of linear and non-linear EEG parameters and ratios between the systolic peak velocities of carotid arteries and carotid blood asymmetry. We have found age-dependent correlations between EEG and power Doppler ultrasound imaging (PDUI) data. Carotid blood flow asymmetry correlated with delta-rhythm power spectral density only in preschoolers. The ratios of blood flow velocities in the internal carotid arteries to those in the common carotid arteries correlated with higher peak alpha frequency and lower fractal dimension; moreover, they were associated with lower Epworth sleepiness scale scores. The study revealed significant correlations between EEG and PDUI imaging indexes, which are different for healthy children and adults. Despite the fact that the correlations were associated with non-clinical states such as overwork or stress, we assumed that the investigated parameters could be applicable for clinical trials.

中文翻译：

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健康学龄前儿童和成年人颈动脉多普勒超声与脑电图指标的关系

尽管在儿科神经病学临床实践中广泛使用脑电图（EEG）和多普勒超声检查，但是这些方法之间仍然没有众所周知的相关性，这些相关性可能有助于更好地了解脑部过程和神经病理学的发展。这项研究旨在揭示脑电图和多普勒超声方法之间的关系。我们比较了两组没有神经或精神疾病史的成人和学龄前儿童。数据分析包括对脑电图和颈动脉血流指数的调查，这对神经系统诊断具有重要意义，还可以计算线性和非线性脑电图参数以及颈动脉的收缩峰值速度与颈动脉血液不对称性之间的比率。我们发现脑电图和功率多普勒超声成像（PDUI）数据之间存在年龄相关性。仅在学龄前儿童中，颈动脉血流不对称与Δ节律功率谱密度相关。颈内动脉与普通颈动脉的血流速度之比与较高的峰值α频率和较低的分形维数有关。此外，他们与爱泼华嗜睡量表评分较低有关。这项研究揭示了脑电图和PDUI影像学指标之间的显着相关性，健康儿童和成人对此有所不同。尽管存在相关性与非临床状态（如劳累过度或压力）相关的事实，我们仍认为所研究的参数可能适用于临床试验。仅在学龄前儿童中，颈动脉血流不对称与Δ节律功率谱密度相关。颈内动脉与普通颈动脉的血流速度之比与较高的峰值α频率和较低的分形维数有关。此外，他们与爱泼华嗜睡量表评分较低有关。这项研究揭示了脑电图和PDUI影像学指标之间的显着相关性，健康儿童和成人对此有所不同。尽管存在相关性与非临床状态（如劳累过度或压力）相关的事实，我们仍认为所研究的参数可能适用于临床试验。仅在学龄前儿童中，颈动脉血流不对称与Δ节律功率谱密度相关。颈内动脉与普通颈动脉的血流速度之比与较高的峰值α频率和较低的分形维数有关。此外，他们与爱泼华嗜睡量表评分较低有关。这项研究揭示了脑电图和PDUI影像学指标之间的显着相关性，健康儿童和成人对此有所不同。尽管存在相关性与非临床状态（如劳累过度或压力）相关的事实，我们仍认为所研究的参数可能适用于临床试验。颈内动脉与普通颈动脉的血流速度之比与较高的峰值α频率和较低的分形维数有关。此外，他们与爱泼华嗜睡量表评分较低有关。这项研究揭示了脑电图和PDUI影像学指标之间的显着相关性，健康儿童和成人对此有所不同。尽管存在相关性与非临床状态（如劳累过度或压力）相关的事实，我们仍认为所研究的参数可能适用于临床试验。颈内动脉与普通颈动脉的血流速度之比与较高的峰值α频率和较低的分形维数有关。此外，他们与爱泼华嗜睡量表评分较低有关。这项研究揭示了脑电图和PDUI影像学指标之间的显着相关性，健康儿童和成人对此有所不同。尽管存在相关性与非临床状态（如劳累过度或压力）相关的事实，我们仍认为所研究的参数可能适用于临床试验。