Spectroscopic intraoperative diagnostics of tumors during photodynamic therapy

developed methods of spectroscopic diagnostics make it possible to move on to personalized photodynamic therapy (PDT) and represent methods of intraoperative PDT dosimetry. The effective energy dose during PDT of a tumor can be determined by a combined assessment of the intensity of photosensitizer (PS) photobleaching and the level of oxygenation.