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Proceedings Paper

New diffuser/applicator for use in the treatment of esophageal cancer by photodynamic therapy
Author(s): Emma J. Hudson; Mark R. Stringer; Kate Dixon; Keyvan Moghissi
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Paper 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.

Paper Details

Date Published: 1 March 1995
PDF: 4 pages
Proc. SPIE 2371, 5th International Photodynamic Association Biennial Meeting, (1 March 1995); doi: 10.1117/12.203416
Show Author Affiliations
Emma J. Hudson, Univ. of Leeds (United Kingdom)
Mark R. Stringer, Univ. of Leeds (United Kingdom)
Kate Dixon, Goole & District Hospital (United Kingdom)
Keyvan Moghissi, Goole & District Hospital (United Kingdom)

Published in SPIE Proceedings Vol. 2371:
5th International Photodynamic Association Biennial Meeting
Denis A. Cortese, Editor(s)

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