Translator Disclaimer
29 June 2001 Frequency-domain fluorescent diffusion tomography of turbid media and in-vivo tissues
Author Affiliations +
Proceedings Volume 4250, Optical Tomography and Spectroscopy of Tissue IV; (2001)
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States
The reconstruction of fluorescence lifetime distributions in heterogeneous turbid media and tumor-bearing animals are experimentally demonstrated by frequency-domain measurements. A set of coupled diffusion equations are used to describe the propagation of excitation and fluorescent emission light in multiply scattering media. A finite element based reconstruction algorithm combined with Marquardt and Tikhonov regularization methods are used to obtain the fluorescence images. The experimental set-up is an automatic multi-channel frequency-domain system. 16 sources and 16 detectors are used. Experiments are performed using indocyanine green (ICG) and 3,3'-diethylthiatricarbocyanine iodide (DTTCI) in tissue-like phantoms of both single- and multi-target configurations with considerations of perfect and imperfect uptake of fluorescence dyes in the scattering media. ICG are used in tumor-bearing animal studies. Our results show that the fluorescence lifetime image of the heterogeneities within a circular surrounding medium and in-vivo tissue can be reconstructed successfully.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ye Yang, Nicusor Iftimia, Yong Xu, and Huabei Jiang "Frequency-domain fluorescent diffusion tomography of turbid media and in-vivo tissues", Proc. SPIE 4250, Optical Tomography and Spectroscopy of Tissue IV, (29 June 2001);

Back to Top