Related Experiment Video
Updated: Mar 14, 2026
08:56
Terahertz Imaging and Characterization Protocol for Freshly Excised Breast Cancer Tumors
Published on: April 5, 2020
11.6K
Terahertz transmission vs reflection imaging and model-based characterization for excised breast carcinomas
Tyler Bowman1, Magda El-Shenawee1, Lucas K Campbell2
1Department of Electrical Engineering, University of Arkansas, 3217 Bell Engineering Center, Fayetteville, AR 72701, USA.
Biomedical Optics Express
|October 5, 2016
Summary
Terahertz reflection imaging offers higher resolution and clearer margins for breast cancer detection than transmission imaging. Both methods differentiate cancerous from healthy tissue, but reflection is more sensitive to variations.
Area of Science:
- Biomedical Optics
- Medical Imaging
- Terahertz Spectroscopy
Background:
- Terahertz (THz) imaging is a promising non-ionizing technique for biomedical applications.
- Distinguishing between cancerous and healthy breast tissue is crucial for diagnosis and treatment planning.
- Existing THz imaging methods require detailed comparison for optimal breast tissue assessment.
Purpose of the Study:
- To experimentally and analytically compare terahertz transmission and reflection imaging modes for breast carcinoma assessment.
- To develop and validate models for both imaging modes using human breast tissue.
- To investigate the differentiation capabilities of THz imaging for various breast tissue types.
Main Methods:
- Development of analytical models for terahertz transmission and reflection imaging.
- Experimental measurements on excised paraffin-embedded human breast tissue and fresh bovine tissues.
- Validation of models using transmission spectroscopy and comparison with reflection measurements.
- Application of validated techniques to thin slices of human breast carcinoma and non-cancerous tissue.
Main Results:
- Both transmission and reflection THz imaging clearly differentiate carcinoma from healthy breast tissue.
- Reflection mode is more sensitive to phase variations caused by tissue and slide thickness deviations.
- Transmission mode shows less sensitivity to phase variations, making it more robust to sample imperfections.
- Reflection imaging provides superior resolution and clearer delineation of tissue margins (cancerous, fibroglandular, fatty).
- Reflection mode images exhibit more features correlating with high-power pathology.
Conclusions:
- Terahertz reflection imaging provides higher resolution and better margin definition for breast cancer assessment compared to transmission imaging.
- While both methods show differentiation capabilities, transmission imaging is less susceptible to sample-related phase variations.
- Reflection imaging's ability to reveal finer details makes it highly valuable for detailed breast tissue analysis and cancer characterization.
