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      1. Author :
        Matthias Nahrendorf; Edmund Keliher; Brett Marinelli; Peter Waterman; Paolo Fumene Feruglio; Lioubov Fexon; Misha Pivovarov; Filip K. Swirski; Mikael J. Pittet; Claudio Vinegoni; Ralph Weissleder
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2010
      5. Publication :
        PNAS
      6. Products :
      7. Volume :
        107
      8. Issue :
        17
      9. Page Numbers :
        N/A
      10. Research Area :
        Cancer
      11. Keywords :
        fluorescence molecular tomography; FMT; Fluorescence Imaging Agents; ProSense; fluorescence-mediated tomography; molecular imaging; multimodal image fusion; computed tomography; cancer
      12. Abstract :
        Fusion imaging of radionuclide-based molecular (PET) and structural data [x-ray computed tomography (CT)] has been firmly established. Here we show that optical measurements [fluorescence-mediated tomography (FMT)] show exquisite congruence to radionuclide measurements and that information can be seamlessly integrated and visualized. Using biocompatible nanoparticles as a generic platform (containing a 18F isotope and a far red fluorochrome), we show good correlations between FMT and PET in probe concentration (r2 > 0.99) and spatial signal distribution (r2 > 0.85). Using a mouse model of cancer and different imaging probes to measure tumoral proteases, macrophage content and integrin expression simultaneously, we demonstrate the distinct tumoral locations of probes in multiple channels in vivo. The findings also suggest that FMT can serve as a surrogate modality for the screening and development of radionuclide-based imaging agents.
      13. URL :
        http://www.pnas.org/content/107/17/7910.abstract?sid=084c1ba8-0b02-4833-acdd-b57bea226faf
      14. Call Number :
        PKI @ sarah.piper @
      15. Serial :
        4468
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