Dosimetry for photo-coagulation by the use of autofluorescence

T. Brodzinski

doi:10.1117/12.2283600

10 January 1989 Dosimetry for photo-coagulation by the use of autofluorescence

T. Brodzinski

Author Affiliations +

Proceedings Volume 10305, Dosimetry of Laser Radiation in Medicine and Biology; 103050J (1989) https://doi.org/10.1117/12.2283600
Event: Institutes for Advanced Optical Technologies, 1988, Berlin, Germany

Abstract

A basic problem when using lasers in medicine is that of dosimetry. The definition of the terms dose, effective value etc. will be dealt with in Chapter 2. This chapter is intended to give an insight into the problems of basic dosimetry and its technical realization within the field of photocoagulation, an established method used to treat the retina, or some skin diseases. Until now the coagulation process was assessed to be completed when the irradiated area became blanched. However in terms of dosimetry, it must be possible to predict or at least to monitor the biological effect using well-defined parameters for the laser or in achieving an objective measure for a feedback loop. In the case of coagulation, a prediction in this form is not possible. There are two ways of pro- ceeding further see Fig. 1. One can either determine the physical effect, i.e. temperature, by some kind of sensors, or even better, use some biological effect as a direct measure of the effective dose applied.

Citation Download Citation

T. Brodzinski "Dosimetry for photo-coagulation by the use of autofluorescence", Proc. SPIE 10305, Dosimetry of Laser Radiation in Medicine and Biology, 103050J (10 January 1989); https://doi.org/10.1117/12.2283600

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