Method for determining the biodistribution of substances using f

Surgery – Truss – Pad

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128633, 128665, 606 2, 606 14, A61B 500

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active

053776763

ABSTRACT:
A method is disclosed for determining the biodistribution of substances using fluorescence spectroscopy. A photosensitizing agent or other intrinsically fluorescent agent, or an agent labeled with an extrinsic fluorophor is administered to a subject. A fiberoptic probe integrated with an excitation light source illuminates the examined tissue and causes fluorescence. The fluorescence is recorded by a spectrograph and plotted as a spectral curve. The intensity ratio (S1/S2) for the fluorescence from the photosensitizing agent (S1) and autofluorescence (S2) for the examined tissue is used as an index for drug presence and compared with the intensity ratio at the same wavelengths for various tissues.

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