A fluorescence molecular tomography system for in vivo tumor imaging is developed using a 748-nm continuous wave diode laser as an excitation source. A high sensitivity cooled charge-coupled device (CCD) camera with excitation and emission filters is utilized to obtain the excitation and fluorescence images. The laser beam performs fast raster scanning using a dual-axis galvanometric scanner. The accuracy of the laser spot position at the source window is within ±200 µm. Based on the phantom experimental results, the spatial resolution is less than 1.7 mm, and the relative quantitation error is about 10%. in vivo imaging of a tumor-bearing nude mouse tagged with near-infrared dye demonstrates the feasibility of the system.
© 2010 Chinese Optics Letters
(170.0110) Medical optics and biotechnology : Imaging systems
(170.6280) Medical optics and biotechnology : Spectroscopy, fluorescence and luminescence
(170.6960) Medical optics and biotechnology : Tomography
Jianwei Fu, Xiaoquan Yang, Guotao Quan, and Hui Gong, "Fluorescence molecular tomography system for in vivo tumor imaging in small animals," Chin. Opt. Lett. 8, 1075-1078 (2010)