Advanced tomographic platform for real-time image reconstruction and biomedical signal analysis

Rymarczyk, Tomasz; Vejar, Andres; Nita, Pawel; Tchórzewski, Paweł

doi:10.1109/iiphdw.2018.8388354

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Such result shows different layers of materials close to the skin. For surface measurements standard Ag/AgCl ECG electrodes with gel were used [28]. Before the measurements, the skin was prepared by rubbing water into the skin to reduce the impedance of first layer of skin [29].…”

Section: Measurements Results and Validationmentioning

confidence: 99%

System Codesign for the Measurement of Biological Tissues using Surface Potential Data Analysis

Hyka¹,

Vejar

Rymarczyk

2022

J. Phys.: Conf. Ser.

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In this work we present the development of a monitoring system that is targeted to track the data of electrical potential measurements in biological tissues. The system is conceived to be portable and its design allows for low-energy consumption. To account for different types of biological materials, the measurement of the bioimpedance of the material is generally used. To achieve both speed and accuracy, we deploy a system using hardware-software codesign with reconfigurable hardware. This integral approach is facilitated by the use of a modern system of chip with mixed signal capabilities. In particular we use a field programmable gate array for accelerating signal processing and data acquisition. A double core microcontroller is used to collect, process and deliver the data over a networked environment.

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Section: Measurements Results and Validationmentioning

confidence: 99%

System Codesign for the Measurement of Biological Tissues using Surface Potential Data Analysis

Hyka¹,

Vejar

Rymarczyk

2022

J. Phys.: Conf. Ser.

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“…The echo/electrical tomography techniques have been proven to be successfully applied in many cases reported in the literature. From the medical perspective, these techniques are pivotal to providing functional information to the patient and are especially useful in cardio-pulmonary monitoring [ 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Electrical Tomography Reconstruction Using Reconfigurable Waveforms in a FPGA

Vejar

Rymarczyk

2021

Sensors

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The principal objective of this research is to conceive a mobile system based on electrical tomography for subsurface imaging and monitoring in order to enable simultaneous recording of electrical potentials of cardiac and pulmonary activity. For an exploration of excitation waveforms in electrical tomography, specialized hardware is required. As the main principle of tomography is the measurement of electrical perturbations on an unknown object, it is crucial to synchronize excitation and sensing processes in a very precise way for the purpose of acquiring meaningful data. To cope with this problem, an FPGA device is used, with an architecture that allows us to trigger excitation signals and to read sensed data simultaneously via independent processes that share the same clock. In this way, waveform reconfiguration on frequency and shape can be provided and studied. The system is connected to a standard microcontroller SoC with a simple API that allows for IoT capabilities for on-line operation and tracking, given that the design is targeted for in vivo medical monitoring. As a result of the research work, a measuring device was developed, the surface data analyzed and the image was reconstructed using the selected configuration.

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Mapping the conductivity of graphene with Electrical Resistance Tomography

Cultrera

Serazio

Zurutuza

et al. 2019

Sci Rep

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Electronic applications of large-area graphene films require rapid and accurate methods to map their electrical properties. Here we present the first electrical resistance tomography (ERT) measurements on large-area graphene samples, obtained with a dedicated measurement setup and reconstruction software. The outcome of an ERT measurement is a map of the graphene electrical conductivity. The same setup allows to perform van der Pauw (vdP) measurements of the average conductivity. We characterised the electrical conductivity of chemical-vapour deposited graphene samples by performing ERT, vdP and scanning terahertz time-domain spectroscopy (TDS), the last one by means of a commercial instrument. The measurement results are compared and discussed, showing the potential of ERT as an accurate and reliable technique for the electrical characterization of graphene samples.

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Advanced tomographic platform for real-time image reconstruction and biomedical signal analysis

Cited by 4 publications

References 10 publications

System Codesign for the Measurement of Biological Tissues using Surface Potential Data Analysis

System Codesign for the Measurement of Biological Tissues using Surface Potential Data Analysis

Electrical Tomography Reconstruction Using Reconfigurable Waveforms in a FPGA

Mapping the conductivity of graphene with Electrical Resistance Tomography

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