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Iranian Journal of Nuclear Medicine، جلد ۱۹، شماره ۱، صفحات ۵۹-۶۳
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عنوان انگلیسی Body outlining using Tc-99m filled flood source for lymphoscintigraphy imaging
چکیده انگلیسی مقاله Introduction: In the current study, we evaluated the feasibility of body outlining using Tc-99m filled flood source for lymphoscintigraphy imaging. Methods: 80 patients were included in the study. Sentinel node mapping was done using Tc-99m Antimony sulfide colloid. For outlining the body a Tc-99m filled flood source was used which was placed behind or lateral to the patients for Anterior and lateral images respectively. The flood source was filled with 0.5 mCi, 1 mCi, 2 mCi, and 5 mCi for 10, 47, 10, and 3 patients respectively. The quality of outline images was assessed by two nuclear medicine specialists independently. Radiation exposure to the patients was also evaluated using thermoluminescent dosimeter (TLD-100). Results: The quality of body contour images were good in images taken by 1, 2, and 5 mCi filled flood source. However the quality of images was poor in 8 out of 10 lymphoscintigraphies taken by 0.5 mCi filled flood source. The measured dose rate from the Tc-99m flood source was 1.07 ± 0.04 µSv/MBq/hr (39 ± 1.5 µSv/mCi/hr) or 3.25 µSv for 5 min acquisition times. Conclusion: Body outlining is feasible with Tc-99m filled flood source. To assure high quality, at least 1 mCi of Tc-99m pertechnetate should be used for filling the source. This technique can be very useful especially when Co-57 is not available or has decayed. The need to prepare the flood source for each patient and difficulty in handling the source especially for the lateral views are the major limitations.
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نویسندگان مقاله مهدی مومن نژاد |
nuclear medicine research center, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)

حمیدرضا حقیقی کاخکی | hamid reza haghighi kakhki
azad university of medical sciences, mashhad, iran

رامین صادقی |
nuclear medicine research center, mashhad university of medical sciences, mashhad, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)

نشانی اینترنتی http://irjnm.tums.ac.ir/article_573_fc7f4a799c5c22608445c940a8481e67.pdf
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