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The irradiation process in case #2. (a) shows the operator performing PBM irradiation aphthous lesion on case #2, using the flattop beam profile to deliver the photonic energy of λ 980 nm via a static technique, and the patient appears very comfortable and cooperative during the PBM treatment. (b) illustrates the direction of the flattop beam profile at few millimetres distance from the target tissue and perpendicular to the target tissue.
