TY - CHAP U1 - Konferenzveröffentlichung A1 - Ströbl, Stephan A1 - Freymüller, Christian A1 - Domke, Matthias A1 - Sroka, Ronald T1 - Light distribution of optical fiber diffusers in turbid medium derived from air-based measurement methods T2 - VII International Symposium Topical Problems of Biophotonics 2019. Proceedings. 27-21 July, 2019. Nizhniy Novgorod - Uglich - Nizhniy Novgorod N2 - Interstitial photodynamic therapy (iPDT) treats malignant brain cancer cells by irradiation with low power laser light. The light is guided into the human body by diffuse emitting fibers. This study targets the light distribution of optical diffusers within the brain tissue. It was shown, that by submerging an optical diffuser into human brain phantom, its radiation profile measured in air converges towards a Gaussian distribution with increasing phantom depth. A camera method using digital averaging filters as well as an integrating sphere setup, both, smoothing the diffuser radiation profile were applied onto the evaluated diffuser. Y1 - 2019 SP - 269 EP - 270 ER -