Studies on PCA for Breast Tissue Segmentation

Cassar, Quentin; Al-Ibadi, Amel; Mavarani, Laven; Hillger, Philipp; Grzyb, Janusz; MacGrogan, Gaëtan; Pfeiffer, Ullrich R.; Zimmer, Thomas; Guillet, Jean-Paul; Mounaix, Patrick

doi:10.1109/irmmw-thz.2018.8510143

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…In [54,[283][284][285][286][287], the ability to use THz waves in the diagnosis of breast tumors (mainly ductal and lobular carcinomas) has been considered. From figures 15(a) and (b), we notice that significant contrast is observed between the THz optical properties of three tissue types-tumor, fibrous and fat tissues [54].…”

Section: Intraoperative Diagnosismentioning

confidence: 99%

The progress and perspectives of terahertz technology for diagnosis of neoplasms: a review

Zaytsev

Dolganova

Chernomyrdin

et al. 2019

J. Opt.

164

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Over the past few decades, significant attention has been paid to the biomedical applications of terahertz (THz) technology. Nowadays, THz spectroscopy and imaging have allowed numerous demanding problems in the biological, medical, food, plant and pharmaceutical sciences to be solved. Among the biomedical applications, the label-free diagnosis of malignant and benign neoplasms represents one of the most attractive branches of THz technology. Despite this attractiveness, THz diagnosis methods are still far from being ready for use in medical practice. In this review, we consider modern research results in the THz diagnosis of malignant and benign neoplasms, along with the topical research and engineering problems which restrain the translation of THz technology to clinics. We start by analyzing the common models of THz-wave-tissue interactions and the effects of tissue exposure to THz waves. Then, we discuss the existing modalities of THz spectroscopic and imaging systems, which have either already been applied in medical imaging, or hold strong potential. We summarize the earlier-reported and original results of the THz measurements of neoplasms with different nosology and localization. We pay attention to the origin of contrast between healthy and pathological tissues in the THz spectra and images, and discuss the prospects of THz technology in

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Section: Intraoperative Diagnosismentioning

confidence: 99%

The progress and perspectives of terahertz technology for diagnosis of neoplasms: a review

Zaytsev

Dolganova

Chernomyrdin

et al. 2019

J. Opt.

164

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“…Terahertz (THz) imaging and spectroscopy are fast becoming indispensable tools in many daily-life applications such as remote sensing, 1 astronomy and planetary science, 2 biomedical sciences, 3 etc. In conventional spectroscopy or imaging, a change in the amplitude of a measured (transmitted and/or reflected) signal of an object is commonly attributed to either absorption or scattering.…”

Section: Introductionmentioning

confidence: 99%

Enabling fast polarization THz imaging using broadband dual-polarization SiGe HBT detectors

Andree,

Jagtap,

Grzyb

et al. 2023

Emerging Imaging and Sensing Technologies for Security and Defence VIII

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A compact receiver module comprising broadband silicon integrated dual-polarized antenna-coupled heterojunction bipolar transistor (HBT) detectors is implemented as THz polarization imager. Polarization imaging through the Stokes vector formulation captures the scattering of light due to the interaction of light-matter at the interfaces thereby providing the insights on optical activity of the object which otherwise are not observed in conventional spectroscopy or classical imaging. A typical polarization imager requires detection of orthogonal linear and circular polarizations simultaneously. As compared to visible wavelengths where the abundant natural radiation can be split and maneuvered using low loss optomechanical components to record different polarization states, terahertz radiation is weak and lossy optomechanical components pose challenges in performing polarization imaging at terahertz wavelengths. The dual-polarized antenna-coupled detectors packaged as a single pixel can detect orthogonal polarizations simultaneously with isolation below -30 dB thereby minimizing the required optomechanics in polarization imaging set-up. Each detector exhibits a peak responsivity of 5.6 kV/W and minimum NEP of 3 pW/√ Hz at 450 GHz with a broad 10 dB detection bandwidth of 750 GHz (from 250 GHz to 1 THz). These highly sensitive detectors offer a cost-effective alternative to perform frequency domain spectroscopy and imaging. Here, these detectors are implemented to demonstrate polarization imaging at 852 GHz on a diffusive Teflon object. The finer local physical fingerprints of an imprinted Teflon object are computed using the Stokes vector formulation on the orthogonally polarized transmission images.

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Studies on PCA for Breast Tissue Segmentation

Cited by 2 publications

References 3 publications

The progress and perspectives of terahertz technology for diagnosis of neoplasms: a review

The progress and perspectives of terahertz technology for diagnosis of neoplasms: a review

Enabling fast polarization THz imaging using broadband dual-polarization SiGe HBT detectors

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