Patent ID: 7519411

Claim:
A method for elucidating reaction dynamics of photoreactive compounds in vivo, comprising the steps of: a) turning on a probe beam; b) irradiating tissue within a region of interest (ROI) with the probe beam; c) recording fluorescence, phosphorescence and absorption characteristics of the tissue at at least one wavelength; d) administering a photoreactive agent to the ROI; e) irradiating the ROI with the probe beam; f) recording luminescence intensity and lifetime and absorption characteristics of the ROI at at least one wavelength when B =0 Tesla; g) applying a magnetic field of a predetermined strength to the ROI so that the combination of the magnetic field and irradiation induces a chemical reaction in said photoreactive agent; h) simultaneously recording the luminescence intensity and lifetime and absorption characteristics of the ROI at at least one wavelength when B>0 Tesla; i) repeating steps g) and h) for different magnetic field strengths; j) turning off said probe beam; k) processing the recorded data obtained in steps c), f) and h); and l) displaying the results obtained by said processing on a display.