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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">radhyd</journal-id><journal-title-group><journal-title xml:lang="ru">Радиационная гигиена</journal-title><trans-title-group xml:lang="en"><trans-title>Radiatsionnaya Gygiena = Radiation Hygiene</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-426X</issn><issn pub-type="epub">2409-9082</issn><publisher><publisher-name>NIIRG</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21514/1998-426X-2022-15-4-7-14</article-id><article-id custom-type="elpub" pub-id-type="custom">radhyd-907</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Научные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Scientific articles</subject></subj-group></article-categories><title-group><article-title>Влияние детализации трабекулярной структуры фантомов кости на оценку дозы облучения костного мозга от 89,90Sr</article-title><trans-title-group xml:lang="en"><trans-title>The effect of detailing the trabecular structure of bone phantoms on the assessment of the bone marrow dose from 89,90Sr</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шарагин</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sharagin</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шарагин Павел Алексеевич – младший научный сотрудник биофизической лаборатории</p><p>454076, г. Челябинск, ул. Воровского, 68-А</p></bio><bio xml:lang="en"><p>Pavel A. Sharagin – Junior Researcher of the Biophysics Laboratory</p><p>Vorovsky str., 68a, Chelyabinsk, 454076</p></bio><email xlink:type="simple">sharagin@urcrm.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шишкина</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shishkina</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шишкина Елена Анатольевна – доктор биологических наук, старший научный сотрудник биофизической лаборатории</p><p>Челябинск</p></bio><bio xml:lang="en"><p>Elena A. Shishkina – Doctor of Biological Sciences, Senior Researcher of the Biophysics Laboratory</p><p>Chelyabinsk</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Толстых</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tolstykh</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Толстых Евгения Игоревна – доктор биологических наук, ведущий научный сотрудник биофизической лаборатории</p><p>Челябинск</p></bio><bio xml:lang="en"><p>Evgenia I. Tolstykh – Doctor of Biological Sciences, Leading Researcher of the Biophysics Laboratory</p><p>Chelyabinsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дёгтева</surname><given-names>М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Degteva</surname><given-names>M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дёгтева Марина Олеговна – кандидат технических наук, заведующая биофизической лабораторией</p><p>Челябинск</p></bio><bio xml:lang="en"><p>Marina O. Degteva – Candidate of Technical Sciences, Head, the Biophysics Laboratory</p><p>Chelyabinsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский научно-практический центр радиационной медицины, Федеральное медико-биологическое агентство</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Urals Research Center for Radiation Medicine, Federal Medical Biological Agency</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Уральский научно-практический центр радиационной медицины, Федеральное медико-биологическое агентство; Челябинский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Urals Research Center for Radiation Medicine, Federal Medical Biological Agency; Chelyabinsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>13</day><month>01</month><year>2023</year></pub-date><volume>15</volume><issue>4</issue><fpage>7</fpage><lpage>14</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шарагин П.А., Шишкина Е.А., Толстых Е.И., Дёгтева М.О., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Шарагин П.А., Шишкина Е.А., Толстых Е.И., Дёгтева М.О.</copyright-holder><copyright-holder xml:lang="en">Sharagin P.A., Shishkina E.A., Tolstykh E.I., Degteva M.O.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.radhyg.ru/jour/article/view/907">https://www.radhyg.ru/jour/article/view/907</self-uri><abstract><p>В настоящее время существует 2 основных подхода к созданию вычислительных фантомов для костной дозиметрии. В рамках первого подхода микроархитектура заполняющей фантомы спонгиозы включает отдельно трабекулы и отдельно костный мозг, т.е. ткань-источник и тканьдетектор разделены. Второй подход заключается в моделировании костной ткани как гомогенной среды, в которой трабекулярная кость и костный мозг объединены. Результатами моделирования в обоих случаях являются коэффициенты конверсии, которые позволяют преобразовывать удельную активность инкорпорированных радионуклидов в поглощенную в костном мозге дозу. Моделирование скелета необходимо для дозиметрии облученного населения р. Теча от инкорпорированных 89,90Sr. С этой целью были созданы фантомы, включающие описание микроструктуры спонгиозы для людей разного пола и возраста. Для внутриутробной дозиметрии были разработаны фантомы плода и беременной женщины, которые предполагают моделирование кости как гомогенной среды. Использование двух принципиально разных подходов к костной дозиметрии для пре- и постнатального периода ставит вопрос об их совместимости. Цель: оценить влияние детализации трабекулярной структуры фантомов кости на оценку коэффициентов конверсии облучения костного мозга от 89,90Sr. В рамках данной работы были сгенерированы фантомы 8 участков скелета новорожденного, занятых спонгиозой. Для каждого участка скелета было сгенерировано по одному фантому с детальным описанием микроструктуры спонгиозы и по одному фантому, в котором трабекулярная кость смоделирована как гомогенная среда. Для всех фантомов была проведена имитация транспорта излучений от инкорпорированных в ткани – источнике 89,90Sr с использованием программы MCNP 6.2 и рассчитаны значения коэффициентов конверсии. В результате было получено 16 коэффициентов конверсии для всех фантомов. Коэффициенты конверсии, полученные для фантомов с гомогенной спонгиозой, превышают таковые для фантомов с детальным описанием микроструктуры в среднем в 2,4 раза. Такие значительные различия между результатами моделирования позволяют сделать вывод, что детализация трабекулярной структуры фантомов кости оказывает существенное влияние на оценку дозы облучения костного мозга от инкорпорированных 89,90Sr.</p></abstract><trans-abstract xml:lang="en"><p>Today there exist two main approaches to developing computational phantoms for bone dosimetry. The first approach is based on a detailed description of the microarchitecture of the spongiosa filling the phantoms. This microarchitecture includes trabeculae and bone marrow separately, i.e., the source tissue and the detector tissue are separated. The second approach involves generating a homogeneous bone where the target and source tissues are combined. In both cases the simulation results are conversion factors that allow converting the specific activity of incorporated radionuclides into the absorbed dose in the bone marrow. For dosimetry of the Techa River population exposed due to incorporated 89,90Sr, the skeletal phantoms were created for people of different sex and age, starting with a newborn. These phantoms included a detailed description of the trabecular bone microstructure, i.e., they belong to the first approach. Also, phantoms of the skeleton of the fetus and pregnant woman at various gestation stages have been developed, which involves modeling the bone as a homogeneous medium. These phantoms are designed for dosimetry of external and internal exposure, including 89,90Sr dosimetry. The usage of two fundamentally different approaches to bone dosimetry for the pre- and postnatal period raises the issue of compatibility of these approaches and possibility of their combining within a single dosimetric system. Objective: to evaluate the effect of detailing the trabecular structure of bone phantoms on the evaluation of conversion factors of bone marrow exposure due to 89,90Sr. Computational phantoms of eight regions of a newborn’s skeleton filled in with trabecular bone were generated. For each bone region two phantoms were generated: one phantom with a detailed description of the spongiosa microstructure and one phantom with spongiosa modeled as a homogeneous media. For all phantoms, the radiation transport from 89,90Sr incorporated in the source tissue was simulated using the MCNP 6.2 code, and the values of conversion factors were calculated. As a result, 16 conversion factors were obtained for all phantoms. On the average the conversion factors obtained for phantoms with homogeneous spongiosa exceed those for phantoms with a detailed description of the spongiosa microstructure by 2.4 times. Such significant difference between the results makes it possible to conclude that the detailing description of trabecular structure of bone phantoms has a significant impact on the assessment of the bone marrow dose due to incorporated 89,90Sr.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вычислительные фантомы</kwd><kwd>внутреннее облучение</kwd><kwd>красный костный мозг</kwd><kwd>стронций-90</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computational phantoms</kwd><kwd>internal exposure</kwd><kwd>red bone marrow</kwd><kwd>strontium-90</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Финансирование работы осуществлялось в рамках федеральной целевой программы «Обеспечение ядерной и радиационной безопасности на 2016–2020 годы и на период до 2030 года» НИОКР.</funding-statement><funding-statement xml:lang="en">The work was funded within the framework of the federal target program “Ensuring Nuclear and Radiation safety for 2016-2020 and for the period up to 2030” R&amp;D.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Krestinina L.Yu., Davis F.G., Schonfeld S., et al. 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