نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی هستهای، دانشکده مهندسی هستهای، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
2 گروه مهندسی شیمی، دانشکده مهندسی نفت و شیمی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
A PET scan, or positron emission tomography, is a non-invasive method used to create three-dimensional images of tissues containing a radiopharmaceutical based on the amount of positrons emitted. The process requires substances such as fluorine-18 deoxyglucose (FDG), the production of which necessitates the separation of fluorine-18 and oxygen-18 isotopes with high enrichment. FDG, the most common radiopharmaceutical used in PET imaging, is produced in a saline solvent, stored in a glass vial, and injected intravenously. The use of cryogenic distillation columns as an industrial method is suitable for producing enriched oxygen. In this study, two enrichments of 95% and 99% oxygen-18 were evaluated using the ORNL phantom in the MCNP6 nuclear code. The liver was selected as the cancerous tissue, and the energy deposited (MeV/gram) in the tissue was calculated using Tally No. 6. The results indicate that increasing the oxygen-18 mole fraction from 95% to 99% significantly enhances the fluorine-18 yield. Specifically, the uptake of fluorine deoxyglucose (FDG), represented as energy uptake in MCNP6, increased by approximately 15% at 99% enrichment. This suggests that higher enrichment can improve the sensitivity and accuracy of PET imaging in cancer detection.
کلیدواژهها [English]