Wave-Weighted Modulation in Electrical Impedance Tomography

被引：0

作者：

Tuan Nguyen Diep, Quoc ^{[1
,2
]}

Nhut Huynh, Hoang ^{[1
,2
]}

Ven Huynh, Thanh ^{[1
,2
]}

Quan Cao Dinh, Minh ^{[1
,2
]}

Luan Phan, Thien ^{[2
,3
]}

Chau Dang, Nguyen ^{[2
,4
]}

Thien Truong, Tich ^{[2
,5
]}

Tak Shing Ching, Congo ^{[6
,7
,8
]}

Tran, Anh Tu ^{[1
,2
]}

Nghia Tran, Trung ^{[1
,2
]}

机构：

[1] Ho Chi Minh City Univ Technol HCMUT, Fac Appl Sci, Lab Laser Technol, VNUHCM, Ho Chi Minh 72409, Vietnam

[2] Vietnam Natl Univ Ho Chi Minh City, HCMUT, Ho Chi Minh 71308, Vietnam

[3] Univ Sci, Dept Phys & Elect Engn, VNUHCM, Ho Chi Minh 72711, Vietnam

[4] Ho Chi Minh City Univ Technol HCMUT, Fac Elect & Elect Engn, Dept Telecommun Engn, VNUHCM, Ho Chi Minh 72409, Vietnam

[5] Ho Chi Minh City Univ Technol HCMUT, Fac Appl Sci, Dept Engn Mech, VNUHCM, Ho Chi Minh 72409, Vietnam

[6] Natl Chung Hsing Univ, Grad Inst Biomed Engn, Taichung 402, Taiwan

[7] Natl Chung Hsing Univ, Int Doctoral Program Agr, Taichung 402, Taiwan

[8] Natl Chi Nan Univ, Dept Elect Engn, Taichung 545, Taiwan

来源：

IEEE ACCESS | 2024年 / 12卷

关键词：

Frequency modulation; Electrical impedance tomography; Modulation; Conductivity; Image reconstruction; Frequency measurement; Phase modulation; Demodulation; Probes; Spatial resolution; Contrast resolution; Amplitude modulation; biomedical imaging; contrast resolution; demodulation; electrical impedance tomography; frequency modulation; image enhancement; modulation; phase modulation; spatial resolution; RECONSTRUCTION;

D O I：

10.1109/ACCESS.2024.3489652

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This study proposes a wave-weighted modulation method to improve the distinction between areas with small conductivity differences in Electrical Impedance Tomography. The modulated signal is generated by modulating the probe and carrier signals, which are adjusted through modulation indexes, including the amplitude, frequency, and phase. The proposed method was compared with commonly applied methods in Electrical Impedance Tomography and validated through simulations and experimental results. The simulation results showed significant improvements over commonly applied methods, including an increase in the current flow density and a tendency for the current to pass through the different conductivity layers, thereby enhancing the ability to distinguish between layers with small conductivity differences within the object. This study demonstrates the feasibility of the wave-weighted modulation method for enhancing the visualization of biological tissue regions with small conductivity differences in heterogeneous environments, such as hemorrhage, swelling, cancerous and normal tissue layers, or changes in physiological function.

引用

页码：161018 / 161037

页数：20

共 52 条

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