Ploeg-Van den Heuvel, A. van der

fluorescence tissue mthpc chamber excitation autofluorescence wavelength vessel fluorescence intensity method image intensity mthpc administration tissue types time points pharmacokinetic point property tumor photosensitizer profile detection administration change transmission light fluorescence signal signal correction laser imaging difference region measurement filter technique variation concentration absorption tumor tissue chamber model sterenborg hjcm sterenborg tissue type tissue autofluorescence study animal marker correction method 629 nm ratio fluorophore thickness ratiometric model emission diameter background 629- nm wavelength photosensitizer fluorescence dual-wavelength excitation 652- nm excitation fluorescence images transmission images excitation wavelength observation quantification interest result 720±10 effect 652- cancer ccd camera mthpc fluorescence background autofluorescence error bars kinetic autofluorescence signal photodynamic therapy