Abstract
We demonstrate two distinct emerging terahertz (THz) biomedical imaging
techniques. One is based on the use of a new single frequency THz quantum cascade
laser and the other is based on broadband THz time domain spectrocopy. The first
method is employed to derive a metastasis lung tissue imaging at 3.7 THz with clear
contrast between cancerous and healthy areas. The second approach is used to study
an osseous tissue under several imaging modalities and achieve full THz
spectroscopic imaging based on the frequency domain or on a fixed THz propagation
time-delay. Sufficient contrast is achieved which facilitated the identification of
regions with different cellular types and density compositions.
© 2011 Chinese Optics Letters
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