Abstract
Compared with the simulation results of semi-circular and planar rectangular electrode arrays, the bladder filling detection effect of T-type electrode array was studied, and the volume before and after filling was estimated. The bladder model was constructed by COMSOL software, and the voltage simulation was carried out by using adjacent excitation modes. The voltage sensitivity δ and the voltage dynamic range ΔU were calculated, and the detection effect under each array was compared. In the MATLAB environment, three reconstruction algorithms are used for image reconstruction. On the basis of the reconstructed image, interpolation and isosurface extraction methods are used for three-dimensional reconstruction. In the adjacent excitation mode, the detection effect of T-type array is better than that of semicircular and rectangular array; under the two volume positions, the reconstructed image structure similarity is 0.8932 and 0.9094, the correlation coefficient is 0.7196 and 0.7754, and the mean square error is 58.2524 and 33.2243. From the three-dimensional reconstruction results, the reconstructed volumes were 22.4 ml and 343.5 ml, respectively, and the relative errors with the theoretical values were 10.9% and 7.1%. Compared with semicircular and planar arrays, T-shaped array has better detection effect in bladder filling detection. The three-dimensional reconstruction based on the two-dimensional imaging of this array can provide the spatial position and volume size information before and after the change of bladder volume.
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Acknowledgements
This work was funded by Study Chongqing Science and Technology Bureau, Provincial level, 2021.10.01-2024.09.30 (project name: Study on esophageal dynamic characteristics based on impedancy-mechanical characteristics, project number: cstc2021jcyj-msxmX0864).
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Ran, P., Li, M., Mao, Y., Zhang, K., Shao, K. (2023). Detection of Bladder Filling with Open T-type Electrode Array. In: Yang, Q., Dong, X., Ma, W. (eds) The proceedings of the 10th Frontier Academic Forum of Electrical Engineering (FAFEE2022). FAFEE 2022. Lecture Notes in Electrical Engineering, vol 1048. Springer, Singapore. https://doi.org/10.1007/978-981-99-3404-1_48
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