<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Electrical impedance tomography (EIT) is relatively new. It is a verypromising technique to be developed especially in the medical field. The advantages of EIT are that it is non-ionizing, simple, and portable and that it produces a high contrast image. Unfortunately, this modality does not have the capability to generate a highresolution image. Almost all imaging modalities has both advantages and disadvantages. Combining one modality with another is hence expected to cover the weaknesses of each other. The problem is how to develop the concepts, measurement systems and algorithm of dual modalities, particularly electrical and acoustical. The electrical modality can produce high contrast and the acoustical modality can produce high resolution. Combination of these will enhance the image resolution of EIT. High image resolution from the ultrasound reflection tomography is used as the prior information to improve the image resolution of the EIT. Finite Element Model (FEM) can be arranged by non-uniform elements, which are adapted to the boundary. Element models with higher density are arranged at the boundaries to obtain improvements of resolution and the model elements with lower density arranged at other locations to reduce the computational cost. The dual modality EIT with Ultrasound Reflection (EIT-UR) can produce high resolution and contrast image. The resolution improvement can also accelerate the convergence of the Newton-Raphson reconstruction methods.</p></abstract>

Electrical impedance tomography (EIT) is relatively new. It is a verypromising technique to be developed especially in the medical field. The advantages of EIT are that it is non-ionizing, simple, and portable and that it produces a high contrast image. Unfortunately, this modality does not have the capability to generate a highresolution image. Almost all imaging modalities has both advantages and disadvantages. Combining one modality with another is hence expected to cover the weaknesses of each other. The problem is how to develop the concepts, measurement systems and algorithm of dual modalities, particularly electrical and acoustical. The electrical modality can produce high contrast and the acoustical modality can produce high resolution. Combination of these will enhance the image resolution of EIT. High image resolution from the ultrasound reflection tomography is used as the prior information to improve the image resolution of the EIT. Finite Element Model (FEM) can be arranged by non-uniform elements, which are adapted to the boundary. Element models with higher density are arranged at the boundaries to obtain improvements of resolution and the model elements with lower density arranged at other locations to reduce the computational cost. The dual modality EIT with Ultrasound Reflection (EIT-UR) can produce high resolution and contrast image. The resolution improvement can also accelerate the convergence of the Newton-Raphson reconstruction methods.

Dual modality electrical impedance and ultrasound reflection tomography to improve image quality

Journal of Electrical Bioimpedance

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Electrical impedance tomography (EIT) is relatively new. It is a verypromising technique to be developed especially in the medical field. The advantages of EIT...

Dual modality electrical impedance and ultrasound reflection tomography to improve image quality

Article Category: Articles

Published Online: Apr 17, 2017

Page range: 3 - 10

Received: Sep 04, 2016

DOI: https://doi.org/10.5617/jeb.3852

Keywords
Improved quality, electrical impedance tomography, ultrasound reflection imaging, multimodal imaging, image resolution, image contrast

© 2017 K. Ain, D. Kurniadi, S. Suprijanto, O. Santoso, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Dual modality electrical impedance and ultrasound reflection tomography to improve image quality

Article Category: Articles

Published Online: Apr 17, 2017

Page range: 3 - 10

Received: Sep 04, 2016

DOI: https://doi.org/10.5617/jeb.3852

KeywordsImproved quality, electrical impedance tomography, ultrasound reflection imaging, multimodal imaging, image resolution, image contrast

© 2017 K. Ain, D. Kurniadi, S. Suprijanto, O. Santoso, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Improved quality, electrical impedance tomography, ultrasound reflection imaging, multimodal imaging, image resolution, image contrast