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Proceedings Paper

Imaging with a terahertz quantum cascade laser for biomedical applications
Author(s): Seongsin M. Kim; Fariba Hatami; Allison W. Kurian M.D.; Lynford Goddard; James Ford M.D.; James S. Harris; Giacomo Scalari; Marcella Giovannini; Nicolas Hoyler; Jerome Faist; Geoff Harris
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Paper Abstract

We investigated and demonstrated bio-medical imaging using a THz quantum cascade laser. With the THz quantum cascade laser (QCL) at 3.8 THz, we obtained large dynamic range and high spatial resolution in the transmission imaging technique. The various tissues images, such as lung, liver, and brain sections from the laboratory mouse were obtained and studied. The most important factor for this imaging scheme is to obtain high contrast with different absorption characteristics in tissues. We explored distinct images from the fat, muscles and tendon from the freshly cut tissues and investigated absorption coefficient and compared with FTIR measurement. We also demonstrated the image of distinct region of tumors progressed and normal tissues using this technique. The comparison of frequency dependent medical imaging with utilizing different wavelength of QCLs has been addressed.

Paper Details

Date Published: 17 November 2005
PDF: 9 pages
Proc. SPIE 6010, Infrared to Terahertz Technologies for Health and the Environment, 60100I (17 November 2005); doi: 10.1117/12.630999
Show Author Affiliations
Seongsin M. Kim, Stanford Univ. (United States)
Fariba Hatami, Stanford Univ. (United States)
Allison W. Kurian M.D., Stanford Univ. (United States)
Lynford Goddard, Stanford Univ. (United States)
James Ford M.D., Stanford Univ. (United States)
James S. Harris, Stanford Univ. (United States)
Giacomo Scalari, Univ. of Neuchâtel (Switzerland)
Marcella Giovannini, Univ. of Neuchâtel (Switzerland)
Nicolas Hoyler, Univ. of Neuchâtel (Switzerland)
Jerome Faist, Univ. of Neuchâtel (Switzerland)
Geoff Harris, Univ. of California, Davis Medical Ctr. (United States)

Published in SPIE Proceedings Vol. 6010:
Infrared to Terahertz Technologies for Health and the Environment
Alexey A. Belyanin; Rebekah A. Drezek; Claire F. Gmachl, Editor(s)

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