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- W2010458855 abstract "An analyzer of <SUP>13</SUP>CO<SUB>2</SUB>/<SUP>12</SUP>CO<SUB>2</SUB> ratio in exhaled air based on lead-salt tunable diode lasers is presented. High accuracy of the carbon isotope ratio detection in exhaled carbon dioxide was achieved with help of very simple optical schematics. It was based on the use of MBE laser diodes operating in pulse mode and on recording the resonance CO<SUB>2</SUB> absorption at 4.2 micrometers . Special fast acquisition electronics and software were applied for spectral data collection and processing. Developed laser system was tested in a clinical train aimed to assessment eradication efficiency in therapy of gastritis associated with Helicobacter pylori infection. Data on the <SUP>13</SUP>C-urea breath test used for P.pylori detection and obtained with tunable diode lasers in the course of the trail was compared with the results of Mass-Spectroscopy analysis and histology observations. The analyzer can be used also for <SUP>13</SUP>CO<SUB>2</SUB>/<SUP>12</SUP>CO<SUB>2</SUB> ratio detection in exhalation to perform gastroenterology breath test based on using other compounds labeled with stable isotopes." @default.
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- W2010458855 date "1999-07-14" @default.
- W2010458855 modified "2023-09-23" @default.
- W2010458855 title "13CO 2 /12CO 2 ratio analysis in exhaled air by lead-salt tunable diode lasers for noninvasive diagnostics in gastroenterology" @default.
- W2010458855 doi "https://doi.org/10.1117/12.353109" @default.
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