A robust current pattern for the detection of intraventricular hemorrhage in neonates using electrical impedance tomography.
A robust current pattern for the detection of intraventricular hemorrhage in neonates using electrical impedance tomography.
复制标题
DOI：
10.1007/s10439-010-0003-9
复制
发表时间：
2010-08
影响因子：
3.8
通讯作者：
Sadleir, R. J.
中科院分区：
文献类型：
--
作者：
Tang, T.;Oh, Sungho;Sadleir, R. J.
我们比较了两个16电极电阻抗断层扫描（EIT）电流模式的能力，重建和量化少量出血内的新生儿头部使用模拟和幻影数据。使用的电流模式是相邻注射RING模式（电极等距位于球体的赤道上）和基于10-20 EEG电极布局的EEG电流模式。模拟婴儿头骨中的电重要结构的结构被包括在一个球形的数值正演模型，并确定其对重建的影响。EEG模式被认为是一个更好的拓扑结构，定位和量化异常侧脑室区域内。RING电极模式不能很好地重建异常位置，因为它不能区分不同的轴向位置。在无噪声环境中，RING模式的量化准确性与EEG模式一样好。然而，当加入噪声时，EEG模式比RING模式表现出更好的量化能力。EEG模式的性能进一步改善相对于环模式时，前向模型中包括一个囟。当从包含这样的开口和50 dB附加噪声的模型生成时，重建异常的分辨率和对比度显著更好。进一步应用EEG方法从真实的新生儿头部模型中重建数据。总体而言，使用该模型和均匀球形正演模型获得了可接受的重建和量化结果。
We compared two 16-electrode electrical impedance tomography (EIT) current patterns on their ability to reconstruct and quantify small amounts of bleeding inside a neonatal human head using both simulated and phantom data. The current patterns used were an adjacent injection RING pattern (with electrodes located equidistantly on the equator of a sphere) and an EEG current pattern based on the 10–20 EEG electrode layout. Structures mimicking electrically important structures in the infant skull were included in a spherical numerical forward model and their effects on reconstructions were determined. The EEG pattern was found to be a better topology to localize and quantify anomalies within lateral ventricular regions. The RING electrode pattern could not reconstruct anomaly location well, as it could not distinguish different axial positions. The quantification accuracy of the RING pattern was as good as the EEG pattern in noise-free environments. However, the EEG pattern showed better quantification ability than the RING pattern when noise was added. The performance of the EEG pattern improved further with respect to the RING pattern when a fontanel was included in forward models. Significantly better resolution and contrast of reconstructed anomalies was achieved when generated from a model containing such an opening and 50 dB added noise. The EEG method was further applied to reconstruct data from a realistic neonatal head model. Overall, acceptable reconstructions and quantification results were obtained using this model and the homogeneous spherical forward model.
登录
查看更多内容
影响因子：
3.8
作者：
Sadleir, Rosalind J.;Neralwala, Farida;Te, Tang;Tucker, Aaron
通讯作者：
Tucker, Aaron
影响因子：
5.7
作者：
Abascal, Juan-Felipe P. J.;Arridge, Simon R.;Holder, David S.
通讯作者：
Holder, David S.
影响因子：
3.2
作者：
Liston, AD;Bayford, RH;Holder, DS
通讯作者：
Holder, DS
影响因子：
64.8
作者：
Metherall, P;Barber, DC;Brown, BH
通讯作者：
Brown, BH
影响因子：
4.6
作者：
MURAI, T;KAGAWA, Y
通讯作者：
KAGAWA, Y