Wave-Weighted Modulation in Electrical Impedance Tomography
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, includi...
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| Veröffentlicht in: | IEEE access 2024, Vol.12, p.161018-161037 |
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| creator | Tuan Nguyen Diep, Quoc Nhut Huynh, Hoang Ven Huynh, Thanh Quan Cao Dinh, Minh Luan Phan, Thien Chau Dang, Nguyen Thien Truong, Tich Tak Shing Ching, Congo Tran, Anh Tu Nghia Tran, Trung |
| description | 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. |
| doi_str_mv | 10.1109/ACCESS.2024.3489652 |
| format | Article |
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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.</description><identifier>ISSN: 2169-3536</identifier><identifier>EISSN: 2169-3536</identifier><identifier>DOI: 10.1109/ACCESS.2024.3489652</identifier><identifier>CODEN: IAECCG</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Amplitude modulation ; biomedical imaging ; Conductivity ; Contrast resolution ; Demodulation ; Electrical impedance ; Electrical impedance tomography ; Electrical resistivity ; Feasibility studies ; Frequency measurement ; Frequency modulation ; Hemorrhage ; image enhancement ; Image reconstruction ; Modulation ; Phase modulation ; Probes ; Spatial resolution ; Tissues ; Tomography</subject><ispartof>IEEE access, 2024, Vol.12, p.161018-161037</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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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.</description><subject>Amplitude modulation</subject><subject>biomedical imaging</subject><subject>Conductivity</subject><subject>Contrast resolution</subject><subject>Demodulation</subject><subject>Electrical impedance</subject><subject>Electrical impedance tomography</subject><subject>Electrical resistivity</subject><subject>Feasibility studies</subject><subject>Frequency measurement</subject><subject>Frequency modulation</subject><subject>Hemorrhage</subject><subject>image enhancement</subject><subject>Image reconstruction</subject><subject>Modulation</subject><subject>Phase modulation</subject><subject>Probes</subject><subject>Spatial resolution</subject><subject>Tissues</subject><subject>Tomography</subject><issn>2169-3536</issn><issn>2169-3536</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>ESBDL</sourceid><sourceid>RIE</sourceid><sourceid>DOA</sourceid><recordid>eNpNkE9Lw0AQxYMoWGo_gR4CnlP3f3bxVELVQsVDKz0um81sm5Jm4yYV-u1NjUjnMsNj3pvhF0X3GE0xRupplmXz1WpKEGFTyqQSnFxFI4KFSiin4vpivo0mbbtHfcle4ukoet6Yb0g2UG53HRTxuy-OlelKX8dlHc8rsF0oranixaGBwtQW4rU_-G0wze50F904U7Uw-evj6PNlvs7ekuXH6yKbLRNLpOoSoMwxjilGwqbEcEexQ7k0DIySjhRGFAIkQArKKMSRNILmUqRUcSBFzuk4Wgy5hTd73YTyYMJJe1PqX8GHrTahK20FWnHiZJEzJ3LJHE1zx6wA7jAXlmDG-qzHIasJ_usIbaf3_hjq_n1NMWGSCMZwv0WHLRt82wZw_1cx0mfoeoCuz9D1H_Te9TC4SgC4cKQMEynoD5MnfG0</recordid><startdate>2024</startdate><enddate>2024</enddate><creator>Tuan Nguyen Diep, Quoc</creator><creator>Nhut Huynh, Hoang</creator><creator>Ven Huynh, Thanh</creator><creator>Quan Cao Dinh, Minh</creator><creator>Luan Phan, Thien</creator><creator>Chau Dang, Nguyen</creator><creator>Thien Truong, Tich</creator><creator>Tak Shing Ching, Congo</creator><creator>Tran, Anh Tu</creator><creator>Nghia Tran, Trung</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| subjects | Amplitude modulation biomedical imaging Conductivity Contrast resolution Demodulation Electrical impedance Electrical impedance tomography Electrical resistivity Feasibility studies Frequency measurement Frequency modulation Hemorrhage image enhancement Image reconstruction Modulation Phase modulation Probes Spatial resolution Tissues Tomography |
| title | Wave-Weighted Modulation in Electrical Impedance Tomography |
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