Correlation of temperature rise and optical coherence tomography characteristics in patient retinal photocoagulation

Stefan Koinzer*, Kerstin Schlott, Lea Portz, Lars Ptaszynski, Alexander Baade, Marco Bever, Mark Saeger, Amke Caliebe, Renè Denner, Reginald Birngruber, Ralf Brinkmann, Johann Roider

*Corresponding author for this work
8 Citations (Scopus)

Abstract

We conducted a study to correlate the retinal temperature rise during photocoagulation to the afterward detected tissue effect in optical coherence tomography (OCT). 504 photocoagulation lesions were examined in 20 patients. The retinal temperature increase was determined in real-time during treatment based on thermoelastic tissue expansion which was probed by repetitively applied ns laser pulses. The tissue effect was examined on fundus images and OCT images of individualized lesions. We discerned seven characteristic morphological OCT lesion classes. Their validity was confirmed by increasing visibility and diameters. Mean peak temperatures at the end of irradiation ranged from approx. 60 °C to beyond 100 °C, depending on burn intensity.

Original languageEnglish
JournalJournal of Biophotonics
Volume5
Issue number11-12
Pages (from-to)889-902
Number of pages14
ISSN1864-063X
DOIs
Publication statusPublished - 01.11.2012

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