Radio-opaque isotropic fiber optic probes for in vivo photodynamic therapy dosimetry

Emma J. Hudson; Mark R. Stringer; Hugo J. van Staveren; Michael A. Smith

doi:10.1117/12.168717

1 March 1994 Radio-opaque isotropic fiber optic probes for in vivo photodynamic therapy dosimetry

Emma J. Hudson, Mark R. Stringer, Hugo J. van Staveren, Michael A. Smith

Proceedings Volume 2078, Photodynamic Therapy of Cancer; (1994) https://doi.org/10.1117/12.168717
Event: Europto Biomedical Optics '93, 1993, Budapest, Hungary

Abstract

When measuring laser light distribution in tissue during photodynamic therapy, accurate determination of the position of the monitoring probes is vital. For this purpose, computerized tomographic scanning has been incorporated into our treatment routine. Different mixtures of barium sulphate powder and an opaque dental sealant were used in the construction of probes which could be imaged on a computerized tomographic scan. These were tested for radio- opacity, isotropy and strength, and a mixture of 27% barium sulphate powder and 73% opaque dental sealant was found to be suitable.

Citation Download Citation

Emma J. Hudson, Mark R. Stringer, Hugo J. van Staveren, and Michael A. Smith "Radio-opaque isotropic fiber optic probes for in vivo photodynamic therapy dosimetry", Proc. SPIE 2078, Photodynamic Therapy of Cancer, (1 March 1994); https://doi.org/10.1117/12.168717

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