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1 March 1995 New diffuser/applicator for use in the treatment of esophageal cancer by photodynamic therapy
Emma J. Hudson, Mark R. Stringer, Kate Dixon, Keyvan Moghissi
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Proceedings Volume 2371, 5th International Photodynamic Association Biennial Meeting; (1995) https://doi.org/10.1117/12.203416
Event: Fifth International Photodynamic Association Biennial Meeting, 1994, Amelia Island, FL, United States
Abstract
We have designed and constructed a simple, cheap and effective diffuser/applicator for intraluminal photodynamic therapy in oesophageal cancer. A cylindrical diffusing optical fiber can be easily located in the center of the oesophageal lumen with the use of a modified naso- gastric Ryles tube. This allows more uniform illumination of the luminal circumference. Measurements are presented of the light field generated by this delivery system in an optical phantom. These demonstrate that the presence of the Ryles tube imposes only a small modification on the output of the bare diffuser. The light doses received adjacent to the diffusing section are identical, within the accuracy of measurement, both with and without the tube. This ensures adequate illumination of a circumferential oesophageal tumor using a contained fiber, without adjustment of the established treatment parameters.
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Emma J. Hudson, Mark R. Stringer, Kate Dixon, and Keyvan Moghissi "New diffuser/applicator for use in the treatment of esophageal cancer by photodynamic therapy", Proc. SPIE 2371, 5th International Photodynamic Association Biennial Meeting, (1 March 1995); https://doi.org/10.1117/12.203416
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KEYWORDS
Cancer
Photodynamic therapy
Oncology
Diffusers
Optical fibers
Optical phantoms
Tumors
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