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Proceedings Paper

Scanning photon density angiography of superficial vessels
Author(s): Juergen Helfmann; Rijk Schuetz; Gerhard J. Mueller
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Paper Abstract

Superficial vessels are labeled with the fluorescence marker indocyanine green. Using an intensity modulated laser diode (775 nm, 220 MHz) the fluorescence is excited. The emitted modulated fluorescence intensity originating from the vessel is detected form a small area around the incident laser beam. The intensity and relative phase shift is obtained. By two dimensional scanning the course of the vessels inside the tissue can be calculated. Further a simple method describes how mean optical parameters can be calculated from backscattering data.

Paper Details

Date Published: 11 December 1996
PDF: 10 pages
Proc. SPIE 2927, Optical and Imaging Techniques for Biomonitoring II, (11 December 1996); doi: 10.1117/12.260648
Show Author Affiliations
Juergen Helfmann, Freie Univ. Berlin (Germany)
Rijk Schuetz, Laser und Medizin-Technologie gGmbH (Germany)
Gerhard J. Mueller, Laser und Medizin-Technologie gGmbH and Freie Univ. Berlin (Germany)


Published in SPIE Proceedings Vol. 2927:
Optical and Imaging Techniques for Biomonitoring II
Hans-Jochen Foth; Renato Marchesini; Halina Podbielska, Editor(s)

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