Investigation of biological phantom for 2D and 3D breast EIT images

Qiao, Guofeng; Wang, Wei; Wang, Li.; He, Yi; Bramer, B.; Al-Akaidi, Marwan

doi:10.1007/978-3-540-73841-1_86

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…The impedivity data extracted from injection currents and voltage measurements in the EIT system when the RSC models are placed between electrodes in the E-phantom is compared with the impedance results that are determined using the ColeCole equation in order to assess the performance of the image reconstruction algorithm. This means simulating the impedance of different physical phenomena (in this case electrical properties of Carcinoma, Fat and Stroma tissues) at different frequency points [14,25,26].…”

Section: Rsc Modelmentioning

confidence: 99%

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A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

Zarafshani

Qureshi

Bach

et al. 2016

2016 IEEE International Conference on Electro Information Technology (EIT)

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Abstract-Assessment and validation of the Electrical Impedance Tomography (EIT) system performance and calibration of systematic errors in the electrical field generated inside of the interrogated volume is an important requirement. System instabilities can be caused by the EIT design and must be characterized before and during the clinical trials. Evaluation of the Sussex EIT system used in the clinical study can be based on a realistic electronic phantom. We designed a mesh phantom based on the electrode configuration and mesh structures of the image reconstruction. The phantom has the capability of modelling the cellular electrical properties that are operative within a circular homogeneous medium. The design is optimized to assess the planar topology of the internal impedance distribution. The system employs the information from the electrical properties of biological tissues to evaluate the Cole-Cole dispersion data. This mesh phantom is capable of producing localized conductivity perturbations between each arbitrary channel in the electrode placement planar phantom topology by measuring all 1416 combinations that are to be used in the image reconstruction. The phantom is especially designed for the Sussex EIT system to validate system performance of measurements consisting of SNR, and modelling system accuracy.

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Section: Rsc Modelmentioning

confidence: 99%

“…The physical phantom that is used for EIT systems typically is composed of a conductive gel medium with objects embedded in this medium [12][13][14]. The medium and object have different impedances, which permit the EIT system to detect changes of impedance and image them [12,15].…”

Section: Introductionmentioning

confidence: 99%

A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

Zarafshani

Qureshi

Bach

et al. 2016

2016 IEEE International Conference on Electro Information Technology (EIT)

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“…This is generally performed with a practical phantom mimicking the patient's body parts. Researchers have reported several types of phantoms for studying their EIT systems such as [26][27][28][29], saline-agar phantom [30][31][32], saline-vegetable phantom [2,33,34], and passive or active element phantoms [35,36]. The phantoms with electrical components are sometimes advantageous due to their long life, rigidity, stability and ease of control.…”

Section: Introductionmentioning

confidence: 99%

A Chicken Tissue Phantom for Studying an Electrical Impedance Tomography (EIT) System Suitable for Clinical Imaging

Bera

Nagaraju

2011

Sens Imaging

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The study of practical phantoms is essential for assessing the reconstruction algorithms and instrumentation used in Electrical Impedance Tomography (EIT). Responses of saline phantoms with insulator inhomogeneities differ from the real tissue phantoms in several aspects. Also, it is difficult to reconstruct the actual resistivity of the insulator inhomogeneity in a saline background because of their large resistivity difference. A practical biological phantom consisting of two different materials with low resistivity difference is more suitable for impedance imaging studies. In order to demonstrate this, a chicken tissue phantom was developed to study the resistivity imaging in EIT. A 16-electrode array was placed inside the phantom tank filled with chicken muscle tissue paste and chicken tissue. A 1 mA, 50 kHz sinusoidal current was injected at the phantom boundary and the boundary potentials are measured using opposite current injection protocol. Resistivity images were reconstructed from the boundary data using Electrical Impedance and Diffuse Optical Reconstruction Software (EIDORS) and the reconstruction was evaluated by calculating the contrast parameters of the images. Results show that the resistivity of the chicken fat is successfully reconstructed with a proper background resistivity. Impedance spectroscopic studies show that the chicken tissue phantom can be suitably used to evaluate a multifrequency EIT system.

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“…use phantoms that are made of materials with different impedances. Some of EIT applications include detection of breast cancer, normal breast tissue, and cancer using different impedances [3,14,21].…”

mentioning

confidence: 99%

Anomaly Detection Using Electric Impedance Tomography Based on Real and Imaginary Images

Sapuan

Yasin

Ain

et al. 2020

Sensors

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This research offers a method for separating the components of tissue impedance, namely resistance and capacitive reactance. Two objects that have similar impedance or low contrast can be improved through separating the real and imaginary images. This method requires an Electrical Impedance Tomography (EIT) device. EIT can obtain potential data and the phase angle between the current and the potential measured. In the future, the device is very suitable for imaging organs in the thorax and abdomen that have the same impedance but different resistance and capacitive reactance. This device consists of programmable generators, Voltage Controlled Current Source (VCCS), mulptiplexer-demultiplexer potential meters, and phase meters. Data collecting was done by employing neighboring, while reconstruction was used the linear back-projection method from two different data frequencies, namely 10 kHz and 100 kHz. Phantom used in this experiment consists of distillated water and a carrot as an anomaly. Potential and phase data from the device is reconstructed to produce impedance, real, and imaginary images. Image analysis is performed by comparing the three images to the phantom. The experimental results show that the device is reliable.

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Investigation of biological phantom for 2D and 3D breast EIT images

Cited by 9 publications

References 5 publications

A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

A 3D multi-frequency response electrical mesh phantom for validation of the planar structure EIT system performance

A Chicken Tissue Phantom for Studying an Electrical Impedance Tomography (EIT) System Suitable for Clinical Imaging

Anomaly Detection Using Electric Impedance Tomography Based on Real and Imaginary Images

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