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- W2068403775 abstract "Background: Although there are several methods for atherosclerosis detection available, none of them seems to be accurate enough to identify the vulnerable atheroscleroitc plaque. Photodynamic diagnosis (PDD) and therapy (PDT) -- a new method evaluated for neoplasms treatment is a modern approach to detecting and treating atherosclerosis. Aim: The purpose of this study was to assess in vitro the capability of PDD with use of chlorin e6 to recognize atherosclerotic plaque and its usefulness as a feedback system for photoangioplasty treatment. Methods: 30 specimens of human aorta. The samples were soaked with chlorin e6 and then washed out. The luminescence spectra were then collected. All samples were examined with light microscopy. Results: Tissue fluorescence is seen as green light. We noted a very strong red fluorescence of chlorin e6 originating from lipid reach plaque. We established a quantitative factor which would be the ratio R of chlorin e6 red intensity in its 660 nm maximum compared to the area of green luminescence centered at 515 nm. The highest value of the ratio was reached at atheromatous samples, then calcified and normal ones R<sub>2</sub> = 3.51 ± 0.62, R<sub>3</sub> = 1.63 ± 0.31, R<sub>1</sub> = 1.51 ± 0.15 respectively. Statistically significant difference was noted between group two and one and between group two and three R<sub>2</sub> = 3.51 ± 0.62 vs R<sub>3</sub> = 1.63 ± 0.31 (p < 0,05); R<sub>2</sub> = 3.51 ± 0.62 vs. R<sub>1</sub> = 1.51 ± 0.15 (p<0.05) respectively. Conclusions: the following in vitro study confirms that photosensitizer chlorin e6 accumulates within atheromatous plaque. It may be a specific tool for atheromatous and normal or calcified segments discrimination. The advantage of the above method is a possibility of a real time imaging followed by targeted therapy of various forms and stages of atherosclerosis." @default.
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- W2068403775 date "2004-07-07" @default.
- W2068403775 modified "2023-10-18" @default.
- W2068403775 title "<title>In vitro experimental photodynamic diagnosis of artery atherosclerosis</title>" @default.
- W2068403775 doi "https://doi.org/10.1117/12.577614" @default.
- W2068403775 hasPublicationYear "2004" @default.
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