Study of gastric cancer samples using terahertz techniques

Faustino Wahaia; Irmantas Kasalynas; Dalius Seliuta; Gediminas Molis; Andrzej Urbanowicz; Catia D. Carvalho Silva; Fatima Carneiro; Gintaras Valusis; Pedro L. Granja

doi:10.1117/12.2063463

22 August 2014 Study of gastric cancer samples using terahertz techniques

Faustino Wahaia, Irmantas Kasalynas, Dalius Seliuta, Gediminas Molis, Andrzej Urbanowicz, Catia D. Carvalho Silva, Fatima Carneiro, Gintaras Valusis, Pedro L. Granja

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Proceedings Volume 9286, Second International Conference on Applications of Optics and Photonics; 92864H (2014) https://doi.org/10.1117/12.2063463
Event: Second International Conference on Applications of Optics and Photonics, 2014, Aveiro, Portugal

Abstract

In the present work, samples of healthy and adenocarcinoma-affected human gastric tissue were analyzed using transmission time-domain THz spectroscopy (THz-TDS) and spectroscopic THz imaging at 201 and 590 GHz. The work shows that it is possible to distinguish between normal and cancerous regions in dried and paraffin-embedded samples. Plots of absorption coefficient α and refractive index n of normal and cancer affected tissues, as well as 2-D transmission THz images are presented and the conditions for discrimination between normal and affected tissues are discussed.

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Faustino Wahaia, Irmantas Kasalynas, Dalius Seliuta, Gediminas Molis, Andrzej Urbanowicz, Catia D. Carvalho Silva, Fatima Carneiro, Gintaras Valusis, and Pedro L. Granja "Study of gastric cancer samples using terahertz techniques", Proc. SPIE 9286, Second International Conference on Applications of Optics and Photonics, 92864H (22 August 2014); https://doi.org/10.1117/12.2063463

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KEYWORDS

Terahertz radiation

Tissues

Cancer

Spectroscopy

Imaging spectroscopy

Absorption

Refractive index

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