Terahertz Computed Computed Tomography and Imaging Challenges

Masoumeh  Mohamadian; Masoumeh  Hosseini

doi:10.18502/fbt.v13i1.20791

Masoumeh Mohamadian Energy Engineering and Physics Department, Amirkabir University of Technology, Tehran, Iran
Masoumeh Hosseini Energy Engineering and Physics Department, Amirkabir University of Technology, Tehran, Iran

DOI: https://doi.org/10.18502/fbt.v13i1.20791

Keywords: Terahertz Imaging; Terahertz Computed Tomography; Terahertz Sources; Acquisition Times.

Abstract

Purpose: Terahertz imaging has emerged as a promising technique for non-destructive evaluation and imaging applications, offering unique advantages over traditional imaging modalities. This paper presents an overview of the current state of Terahertz Computed Tomography and highlights the challenges faced in its implementation.

THz-CT utilizes electromagnetic waves in the terahertz frequency range to reconstruct three-dimensional images of objects with high resolution and penetration capabilities. The ability to visualize internal structures without the use of ionizing radiation has significant implications for various fields.

Materials and Methods: Despite its potential, it faces several challenges that need to be addressed for its widespread adoption. Firstly, the limited availability and complexity of THz sources and detectors hinder the practical implementation of THz-CT systems. Efforts are being made to develop compact, efficient, and cost-effective THz sources and detectors to overcome these limitations.

Secondly, THz waves are highly susceptible to scattering and absorption by various materials. This poses challenges in achieving accurate and artifact-free reconstructions, especially in applications involving biological samples.

Results: Furthermore, the relatively long acquisition times required for THz-CT imaging limit its real-time applications. Efforts are underway to develop faster acquisition methods to reduce acquisition times while maintaining image quality.

Lastly, the lack of standardized protocols and benchmarks for THz-CT imaging hinders the comparison and reproducibility of results across different systems and studies.

Also, in addition to its various applications, terahertz medical imaging and medical microbiological detection play a significant role in the diagnosis of several types of cancers.

Conclusion: In conclusion, THz-CT holds great promise for various imaging applications, but several challenges need to be overcome for its widespread adoption. Addressing the limitations associated with THz sources, scattering and absorption effects, acquisition times, and standardization will pave the way for the realization of the full potential of THz-CT in the future.