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- W2022421880 abstract "Purpose: A novel, low cost, and fast acquisition fluorescence tomography (FT) system was designed and built for preclinical focal radiation research to provide soft tissue guidance as well as to support highly sensitive functional imaging. Materials & Methods: The cone beam (CB) CT/FT system was designed and tested in a standalone form. The mouse is placed prone on a rotation stage. The x-ray source and flat panel detector for the CBCT are aligned perpendicular to the mouse anterior-posterior axis. The anatomical information obtained from CBCT is used as prior information to enhance subsequent optical reconstruction by limiting the solution space. Prior to FT acquisition, diffuse optical tomography (DOT) is performed to reconstruct the animal optical properties. Optical fibers at fixed positions in contact with the animal deliver the source light of different wavelengths for DOT. For FT, a diode laser replaces the lamp as the excitation source. A CCD camera with f/1.4 lens is used as the optical detector. The CCD camera response readout was calibrated using an integrating sphere to provide the absolute light fluence rate at the desired wavelength. A mirror system capable of 90 degree rotation around the animal reflects the optical signal to the CCD camera. Results: To test the FT system, pre-drilled holes in a tissue-simulating phantom were filled with a solution of indocyanine green (ICG). Several scenarios were used to test the optical system, such as examining the spatial resolution by placing the same fluorophore at variable separations, and reconstructing the ICG and another infrared fluorophore simultaneously to simulate multiple color functional imaging. Our initial results show that FT can localize the ICG source to within 1 mm. Conclusion: The novel CBCT/FT system presents new research opportunities for image guided pre-clinical radiation research." @default.
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- W2022421880 date "2013-06-01" @default.
- W2022421880 modified "2023-09-22" @default.
- W2022421880 title "WE-C-WAB-05: A Novel Integrated X-Ray and Fluorescence Tomography System for Small Animal Radiation Research Platform" @default.
- W2022421880 doi "https://doi.org/10.1118/1.4815541" @default.
- W2022421880 hasPublicationYear "2013" @default.
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