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Proceedings Paper

Infrared diaphanoscopy and infrared fluoroscopic imaging in biological tissue
Author(s): Juergen Beuthan; Gerhard J. Mueller; Olaf Minet; Andre Roggan; Viravuth Prapavat
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Paper Abstract

A procedure is described which is based on the imaging of scattered photons in human tissue. This is demonstrated in diagnostic of the maxillary. When an applicator radiation (NIR) is brought into the nasopharynx the photons transmit through the maxillary. In dependence of the optical parameters of the tissue ((mu) a, (mu) s, g) a part of the photons reach the ground of the Orbita, they are scattered there and detected with a CCD-camera which is positioned in front of the maxillary. During disease of the maxillary the optical parameters are changing drastically. The detected part of scattered photons are in correlation with these changes. These changes are demonstrated in IRD-pictures. The IRF is a modification of the IRD. A `light source' is produced in the tissue structure, i.e. during fluorescence angiography through adequate excitation of these markers with laser light. In dependence of the optical parameters of the tissue layers structure relevant scattered light is detectable. With a CCD- camera two dimensional pictures are detected with use of special filter components.

Paper Details

Date Published: 14 September 1993
PDF: 12 pages
Proc. SPIE 1888, Photon Migration and Imaging in Random Media and Tissues, (14 September 1993); doi: 10.1117/12.154672
Show Author Affiliations
Juergen Beuthan, Freie Univ. Berlin (Germany)
Gerhard J. Mueller, Freie Univ. Berlin (Germany)
Olaf Minet, Freie Univ. Berlin (Germany)
Andre Roggan, Freie Univ. Berlin (Germany)
Viravuth Prapavat, Freie Univ. Berlin (Germany)


Published in SPIE Proceedings Vol. 1888:
Photon Migration and Imaging in Random Media and Tissues
Britton Chance; Robert R. Alfano, Editor(s)

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