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Terahertz Imaging and Characterization Protocol for Freshly Excised Breast Cancer Tumors
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Published on: April 5, 2020

Molecular imaging with terahertz waves.

Seung Jae Oh1, Jihye Choi, Inhee Maeng

  • 1Department of Radiology, Medical Convergence Research Institute, Severance Biomedical Science Institute, College of Medicine, Yonsei University, Seoul, South Korea.

Optics Express
|March 4, 2011
PubMed
Summary

We developed a highly sensitive Terahertz Molecular Imaging (TMI) technique using nanoparticles to visualize cancer in vivo. This advanced imaging method offers superior sensitivity and specificity for early cancer detection and drug delivery monitoring.

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Area of Science:

  • Biomedical Imaging
  • Terahertz Technology
  • Nanotechnology

Background:

  • Current molecular imaging techniques face limitations in sensitivity and specificity for in vivo applications.
  • Photonic-based photothermal molecular imaging has been primarily limited to in vitro studies.

Purpose of the Study:

  • To demonstrate a highly sensitive Terahertz Molecular Imaging (TMI) technique for in vivo cancer imaging.
  • To evaluate the sensitivity, specificity, and quantification capabilities of TMI.
  • To extend photothermal molecular imaging from in vitro to in vivo applications.

Main Methods:

  • Utilized differential modulation of surface plasmons induced on nanoparticles.
  • Developed a Terahertz Molecular Imaging (TMI) technique.
  • Compared TMI with near-infrared absorption imaging.
  • Assessed target specificity at ex vivo and cell levels.

Main Results:

  • Achieved highly sensitive and target-specific in vivo cancer imaging.
  • Detected gold nanoparticles at concentrations as low as 15 µM in vivo.
  • Demonstrated superior sensitivity compared to near-infrared absorption imaging.
  • Confirmed excellent quantification property, linearly proportional to nanoparticle concentration.

Conclusions:

  • The TMI technique offers high sensitivity and specificity for in vivo molecular imaging.
  • TMI can detect low concentrations of nanoparticles, enabling early cancer diagnosis.
  • This technique facilitates monitoring of drug delivery processes and extends photothermal imaging to in vivo applications.