A fluorescent agent accumulation concentration measuring apparatus is configured to include a single-wavelength LED to radiate excitation light to a test bottle loaded in the inside, a barrier filter to transmit only fluorescence from the test bottle, a photoreceptor to receive the fluorescence through...http://www.google.de/patents/US7966051?utm_source=gb-gplus-sharePatent US7966051 - Fluorescent agent concentration measuring apparatus, dose control apparatus, administration system, fluorescent agent concentration measuring method, and dose control method