Inicio  /  Applied Sciences  /  Vol: 14 Par: 5 (2024)  /  Artículo
ARTÍCULO
TITULO

Frequency-Dependent Contrast Enhancement for Conductive and Non-Conductive Materials in Electrical Impedance Tomography

Quoc Tuan Nguyen Diep    
Hoang Nhut Huynh    
Minh Quan Cao Dinh    
Thanh Ven Huynh    
Anh Tu Tran and Trung Nghia Tran    

Resumen

This research investigates the critical role of frequency selection in Electrical Impedance Tomography (EIT), a non-invasive imaging technique that reconstructs internal conductivity distributions through injected electrical currents. Empirical frequency selection is paramount to maximizing the fidelity and specificity of EIT images. The study explores the impact of distinct frequency ranges?low, medium, and high?on image contrast and clarity, particularly focusing on differentiating conductive materials from non-conductive materials. The findings reveal distinct empirical frequency bands for enhancing the respective contrasts: 15?38 kHz for conductive materials (copper) and 45?75 kHz for non-conductive materials (acrylic resin). These insights shed light on the frequency-dependent nature of material contrast in EIT images, guiding the selection of empirical operating ranges for various target materials. This research paves the way for improved sensitivity and broader applicability of EIT in diverse areas.

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