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In Vivo Detection of Gold Nanoshells in Tumors Using Diffuse Optical Spectroscopy

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11 Author(s)
Zaman, R.T. ; Univ. of Texas at Austin, Austin ; Diagaradjane, P. ; Wang, J.C. ; Schwartz, J.
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This study demonstrates the use of diffuse optical spectroscopy (DOS) for the noninvasive measurement of gold nanoshell concentrations in tumors of live mice. We measured the diffuse optical spectra (500-800 nm) using an optical fiber probe placed in contact with the tissue surface. We performed in vitro studies on tissue phantoms illustrating an accurate measurement of gold-silica nanoshell concentration within 12.6% of the known concentration. In vivo studies were performed on a mouse xenograft tumor model. DOS spectra were measured at preinjection, immediately postinjection, 1 and 24 h postinjection times, and the nanoshell concentrations were verified using neutron activation analysis.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:13 ,  Issue: 6 )