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- W1994861796 abstract "For most applications in laser medicine suitable delivery systems are required. We developed fiber optic based diffusing tips especially for photodynamic therapy (PDT) and laser induced thermotherapy (LITT). To realize an adequate emitting cylindrical diffuser the fiber core was abraded by a precision cutter. Hence, the use of scattering media such as TiO<SUB>2</SUB>-doped polymers is avoided. Because the diffuser size is mainly determined by the manipulated fiber and a surrounding glass capillary, one can realize small diameters ((phi) approximately equals 3 mm). The laser light is distributed mainly by surface scattering and total reflection at the fiber air boundary. Because the use of absorbing media is avoided, it is possible to apply high laser power as necessary in LITT and pulsed PDT. We produced diffusing tips with lengths of several centimeters and typical diameters of 3 mm. By controlling the fiber-shaping process, a homogeneous intensity profile or even special designs can be achieved. The control is done by either on-line camera surveillance or calculated predictions. A delivery system especially for the photodynamical treatment of female cervix dysplasia has been designed." @default.
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- W1994861796 date "1995-01-03" @default.
- W1994861796 modified "2023-09-26" @default.
- W1994861796 title "<title>Diffusing fiber tips for high-power medical laser applications</title>" @default.
- W1994861796 doi "https://doi.org/10.1117/12.229180" @default.
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