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| Keywords: Photodynamic therapy.jpg Public domain image from cancer gov http //visualsonline cancer gov/details cfm imageid 2340 Shown is close up of surgeons' hands in an operating room with a beam of light traveling along fiber optics for photodynamic therapy Its source is a laser beam which is split at two different stages to create the proper therapeutic wavelength A patient would be given a photo sensitive drug photofrin containing cancer killing substances which are absorbed by cancer cells During the surgery the light beam is positioned at the tumor site which then activates the drug that kills the cancer cells thus photodynamic therapy PDT In addition to the implicit public domain status provided as a work of the United States Government the en National Cancer Institute has also explicitly licensed this photo into the public domain http //visualsonline cancer gov/about cfm PD-USGov original upload log page en wikipedia Photodynamic_therapy jpg 2006-09-02 22 21 Quintote 900×1350×8 467965 bytes <nowiki>Public domain image from cancer gov Shown is close up of surgeons' hands in an operating room with a beam of light traveling along fiber optics for photodynamic therapy Its source is a laser beam which is split at two different stages to create the p</nowiki> Medical treatments Oncology Photochemotherapy | ||||
