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• W2809847874 abstract "Abstract Dynamic electrical impedance tomography (EIT) promises to be a valuable technique for monitoring the development of brain injury. But in practical long-term monitoring, noise and interferences may cause insufficient image quality. To help unveil intracranial conductivity changes, signal processing methods were introduced to improve EIT data quality and algorithms were optimized to be more robust. However, gains for EIT image reconstruction can be significantly increased if we combine the two techniques properly. The basic idea is to apply the priori information in algorithm to help de-noise EIT data and use signal processing to optimize algorithm. First, we process EIT data with principal component analysis (PCA) and reconstruct an initial CT-EIT image. Then, as the priori that changes in scalp and skull domains are unwanted, we eliminate their corresponding boundary voltages from data sets. After the two-step denoising process, we finally re-select a local optimal regularization parameter and accomplish the reconstruction. To evaluate performances of the signal processing-priori information based reconstruction (SPR) method, we conducted simulation and in-vivo experiments. The results showed SPR could improve brain EIT image quality and recover the intracranial perturbations from certain bad measurements, while for some measurement data the generic reconstruction method failed." @default.
• W2809847874 created "2018-07-10" @default.
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• W2809847874 date "2018-07-04" @default.
• W2809847874 modified "2023-10-12" @default.
• W2809847874 title "Combing signal processing methods with algorithm priori information to produce synergetic improvements on continuous imaging of brain electrical impedance tomography" @default.
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• W2809847874 doi "https://doi.org/10.1038/s41598-018-28284-2" @default.
• W2809847874 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6031681" @default.
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• W2809847874 hasPublicationYear "2018" @default.
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