Description 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).
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This work has been released into the public domain by its author, John Crawford (Photographer). This applies worldwide. In some countries this may not be legally possible; if so: John Crawford (Photographer) grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
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{{Information |Description = {{en|<br> :'''Title''' Photodynamic Therapy :'''Description''' 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 lase...
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