ID 70726
Author
Okazaki, Kenji Department of Thoracic, Endocrine Surgery and Oncology, Institute of Health Biosciences, the University of Tokushima Graduate School
Tangoku, Akira Department of Thoracic, Endocrine Surgery and Oncology, Institute of Health Biosciences, the University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Morimoto, Tadaoki Department of Thoracic, Endocrine Surgery and Oncology, Institute of Health Biosciences, the University of Tokushima Graduate School|Department of Surgery, Shikoku Central Hospital of the Mutual Aid Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Kotani, Ryosuke Graduate School of Advanced Technology and Science, the University of Tokushima
Hattori, Keigo Graduate School of Advanced Technology and Science, the University of Tokushima
Yasuno, Emiko Department of Systems and Control Engineering,Anan National College of Technology
Akutagawa, Masatake Department of Electrical and Electronic Engineering, Institute of Technology and Science, the University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Kinouchi, Yohsuke Department of Electrical and Electronic Engineering, Institute of Technology and Science, the University of Tokushima Graduate School Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
noninvasive
local tissue
electrical impedance tomography
measurement
breast diseases
Content Type
Journal Article
Description
The objective of this study is to develop a device for noninvasive local tissue electrical impedance tomography (EIT) using divided electrodes with guard electrodes and to validate its effectiveness using bioequivalent phantoms. For this purpose, we prepared a measurement device and bioequivalent phantoms, measured the electrical characteristics of the phantoms, and validated the method using the phantoms. Monolayer phantoms mimicking the brain and muscle and bilayer phantoms consisting of muscle and brain layers were prepared. The relative differences between the measured electrical conductivities of the monolayer brain and muscle phantoms and the true values determined by the 4-electrode method were both less than 10%. The relative differences between the measured and true values in the bilayer phantoms were less than 20% in both layers. The biological impedance measurement device that we developed was confirmed to be effective for impedance measurement in bilayer phantoms with different electrical impedances. To develop a device for the early diagnosis of breast diseases, the development of a multi-layer phantom and demonstration of the effectiveness of the device for its examination are necessary. If the device that we developed makes impedance measurement in breast tumors possible, it may be used as a new diagnostic modality for breast diseases.
Journal Title
The journal of medical investigation : JMI
ISSN
13431420
NCID
AA11166929
Volume
57
Issue
3-4
Start Page
205
End Page
218
Sort Key
205
Published Date
2010-08
Remark
The journal of medical investigation : http://medical.med.tokushima-u.ac.jp/jmi/index.html
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
departments
Medical Sciences
Science and Technology