Investigation of Bladder Volume Measurement Based on Fringe Effect of Electrical Impedance Tomography Sensors
Kangqi Liu,Xu Bai,Jinzhao Wei,Xiaofeng Liang,Jiangtao Sun,Lijun Xu +5 more
- Vol. 1, pp 1-10
TL;DR: In this paper , the authors exploit the fringe effect of a 2D EIT sensor to derive the 3D volumetric information about bladder and improve the measurement consistency and accuracy of bladder volume under varied urine conductivities.
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Abstract: Patients with bladder dysfunction are unable to perceive bladder volume and urinate spontaneously, and hence usually require catheterization. Personalized catheterization can effectively reduce the risk of urinary tract infections caused by catheterization. Electrical impedance tomography (EIT) can provide an effective tool for personalized catheterization by monitoring bladder volume. This study exploits the fringe effect of a 2D EIT sensor to derive the 3D volumetric information about bladder and improve the measurement consistency and accuracy of bladder volume under varied urine conductivities. The EIT sensor is optimized regarding the specified application of fringe effect. The parameters to be optimized include the electrode arrangement, the distance of electrode plane from bladder bottom, and the number of electrodes. Three evaluation criteria are proposed for the optimization. Simulation and experiment confirm the feasibility of the fringe effect-based method for bladder volume measurement, and the performances of the optimized sensor are illustrated. It is concluded that the fringe effect-based method has a better measurement consistency and accuracy against urine conductivity than the widelyused global impedance-based method, and hence provides a new promising alternative for bladder volume measurement.
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Citations
Application of Machine Learning Algorithms to the Discretization Problem in Wearable Electrical Tomography Imaging for Bladder Tracking
BartŁomiej Baran,Edward Kozłowski,Dariusz Majerek,Tomasz Rymarczyk,Manuchehr Soleimani,Dariusz Wójcik +5 more
TL;DR: In this article , the authors present the implementation of artificial intelligence algorithms for the problem of discretization in Electrical Impedance Tomography (EIT) adapted for urinary tract monitoring.
Bladder Volume Estimation Using 3-D Electrical Impedance Tomography Based on Fringe Field Sensing
TL;DR: In this paper , a single-layer half-circle EIT sensor is proposed and designed to be attached at the top of the full bladder for 3D imaging, based on fringe field sensing.
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Flexi-EIT: A Flexible and Reconfigurable Active Electrode Electrical Impedance Tomography System.
Chao Wang,Wangzilu Lu,Jiajie Huang,Qianyu Guo,Ting Zhou,Jian Zhao,Yongfu Li +6 more
TL;DR: Results demonstrate that the Flexi-EIT system can be easily configured with different numbers of DAEs and scan patterns to provide EIT measurement frames at 38 fps and real-time EIT images with at least 5 fps, showing the potential to be deployed in a variety of application scenarios and providing the optimal balance of system performance and hardware resource usage solutions.
3D Parametric Imaging of Bladder by Single-layered EIT Sensor with Simultaneous Position and Shape Constraints
Kangqi Liu,Mingqing Wang,Peng Suo,Ran Peng,Jiangtao Sun,Hao Wang,Lijun Xu +6 more
TL;DR: The results show that the proposed monitoring method can effectively reconstruct the 3-D parametric image of the bladder, where the structure similarities of reconstructed images against the bladder phantoms are above 0.81, indicating that it has a great potential to be applied in the clinical practice of lower abdominal radiotherapy.
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Fringe effect of electrical capacitance and resistance tomography sensors
Jiangtao Sun,Wuqiang Yang +1 more
TL;DR: In this paper, a common structure for reducing the fringe effect of ECT and ERT sensors was proposed for the first time to simplify the sensor structure and reduce the mutual interference in ECT/ERT dual-modality measurements.
Electric impedance tomography for monitoring volume and size of the urinary bladder
Steffen Leonhardt,Axel Cordes,Harry Wolfgang Plewa,Robert Pikkemaat,Irina Soljanik,Klaus Moehring,Hans Jürgen Gerner,Rüdiger Rupp +7 more
TL;DR: Preliminary results indicate that a sufficiently accurate finite element modeling of the impedance distribution in the abdomen, and proper electrode positioning aids, are important prerequisites to enable this technology to be used for routine measurement of bladder volume.
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