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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">medvis</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская визуализация</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Visualization</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1607-0763</issn><issn pub-type="epub">2408-9516</issn><publisher><publisher-name>RDS-Media Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24835/1607-0763-1160</article-id><article-id custom-type="elpub" pub-id-type="custom">medvis-1268</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>ТЕХНОЛОГИИ ЛУЧЕВОЙ ДИАГНОСТИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RADIOLOGICAL TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Определение точности оценки фракции жира с использованием Dixon: экспериментальное фантомное исследование</article-title><trans-title-group xml:lang="en"><trans-title>Accuracy of fat fraction estimation using Dixon: experimental phantom study</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8684-775X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Панина</surname><given-names>О. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Panina</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Панина Ольга Юрьевна – младший научный сотрудник отдела инновационных технологий ГБУЗ “Научно-практический клинический центр диагностики и телемедицинских технологий ДЗ города Москвы”; старший лаборант кафедры лучевой диагностики ФГБОУ ВО “Московский государственный медико-стоматологический университет им. А.И. Евдокимова” Минздрава России; врач-рентгенолог ГКОБ №1 ДЗ города Москвы</p><p>127051 Москва, ул. Петровка, д. 24, стр. 1;127473 Москва, ул. Делегатская, д. 20, стр.1;105005 Москва, ул. Бауманская, д. 17/1</p></bio><bio xml:lang="en"><p>Olga Yu. Panina – Junior Scientist Researcher of Technical Monitoring and QA Development Department, Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies of Moscow Health Care Department; MD, radiologist, City Clinical Oncological Hospital No. 1 of Moscow Health Care Department; senior laboratory assistant, Moscow State University of Medicine and Dentistry named after A.I. Evdokimov</p><p>24, Petrovka str., Moscow 127051;20/1, Delegatskaya str., Moscow, 127473;17/1, Baumanskaya str., Moscow 105005</p></bio><email xlink:type="simple">olgayurpanina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9014-9022</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Громов</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gromov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Громов Александр Игоревич – доктор медицинских наук, профессор, профессор кафедры лучевой диагностики</p><p>127473 Москва, ул. Делегатская, д. 20, стр.1</p></bio><bio xml:lang="en"><p>Alexander I. Gromov – Doct. of Sci. (Med.), Associate Professor; head of the radiation diagnosis and treatment methods, Oncourology Department</p><p>20/1, Delegatskaya str., Moscow, 127473</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8235-9361</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ахмад</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Akhmad</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ахмад Екатерина Сергеевна – младший научный сотрудник отдела инновационных технологий</p><p>127051 Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Ekaterina S. Akhmad – Scientist Researcher of Technical Monitoring and QA Development</p><p>24, Petrovka str., Moscow 127051</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1694-4682</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петряйкин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Petraikin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петряйкин Алексей Владимирович – кандидат медицинских наук, ведущий научный сотрудник отдела инновационных технологий</p><p>127051 Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Alexey V. Petraikin – Cand. of Sci. (Med.), Associate Professor, Senior Researcher of Technical Monitoring and QA Development</p><p>24, Petrovka str., Moscow 127051</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богачев</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogachev</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Богачев Дмитрий Александрович – руководитель лаборатории</p><p>124489 Московская обл., Елино, ул. Летняя, 1</p></bio><bio xml:lang="en"><p>Dmitry A. Bogachev – Head of the laboratory</p><p>Moscow region</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4293-2514</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Семенов</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Semenov</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Семенов Дмитрий Сергеевич – научный сотрудник отдела инновационных технологий</p><p>127051 Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Dmitry S. Semenov – Scientist Researcher of Technical Monitoring and QA Development</p><p>24, Petrovka str., Moscow 127051</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2990-7736</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Владзимирский</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vladzymyrskyy</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владзимирский Антон Вячеславович – доктор медицинских наук, профессор, заместитель директора по научной работе</p><p>127051 Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Anton V. Vladzymyrskyy – Doct. of Sci. (Med.), Associate Professor, Deputy Director for Science</p><p>24, Petrovka str., Moscow 127051</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0208-5218</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Васильев</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilev</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Васильев Юрий Александрович – кандидат медицинских  – канд. мед. наук, директор</p><p>127051 Москва, ул. Петровка, д. 24, стр. 1</p></bio><bio xml:lang="en"><p>Yury A. Vasilev – Cand. of Sci. (Med.), Director</p><p>24, Petrovka str., Moscow 127051</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГБУЗ “Научно-практический клинический центр диагностики и телемедицинских технологий ДЗ города Москвы”; &#13;
ФГБОУ ВО “Московский государственный медико-стоматологический университет им. А.И. Евдокимова” Минздрава России; &#13;
ГБУЗ города Москвы “Городская клиническая онкологическая больница №1 ДЗ города Москвы”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies of Moscow Health Care Department; &#13;
A.I. Evdokimov Moscow State University of Medicine and Dentistry of the Ministry of Healthcare of the Russian Federation; &#13;
City Clinical Oncology Hospital No. 1</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО “Московский государственный медико-стоматологический университет им. А.И. Евдокимова” Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.I. Evdokimov Moscow State University of Medicine and Dentistry of the Ministry of Healthcare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ГБУЗ “Научно-практический клинический центр диагностики и телемедицинских технологий ДЗ города Москвы”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies of Moscow Health Care Department</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ООО “ЭмульКом”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Company with limited liability “EmulCom”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>21</day><month>10</month><year>2022</year></pub-date><volume>26</volume><issue>4</issue><fpage>147</fpage><lpage>158</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Панина О.Ю., Громов А.И., Ахмад Е.С., Петряйкин А.В., Богачев Д.А., Семенов Д.С., Владзимирский А.В., Васильев Ю.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Панина О.Ю., Громов А.И., Ахмад Е.С., Петряйкин А.В., Богачев Д.А., Семенов Д.С., Владзимирский А.В., Васильев Ю.А.</copyright-holder><copyright-holder xml:lang="en">Panina O.Y., Gromov A.I., Akhmad E.S., Petraikin A.V., Bogachev D.A., Semenov D.S., Vladzymyrskyy A.V., Vasilev Y.A.</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://medvis.rdsmedia.ru/jour/article/view/1268">https://medvis.rdsmedia.ru/jour/article/view/1268</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования: оценка эффективности работы двухточечной и трехточечной МРТ-последовательностей Dixon при фантомном моделировании для определения жировой фракции в диапазоне от 0 до 70%.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Для моделирования веществ с разной концентрацией жировой фазы были выбраны прямые эмульсии типа “масло в воде”. Пробирки с эмульсиями помещались в цилиндрический фантом. Эмульсии на основе растительных масел были представлены в диапазоне от 0 до 70%. Сканирование выполнялось на МР-томографе 1,5 Тл Optima MR450w (GE, США). Было проведено сканирование в двух режимах Dixon: двухточечный метод “Lava-Flex” и трехточечный метод “IDEAL IQ”. Было выполнено сканирование на РЧ-катушке GEM Flex LG Full. Фракция жира определялась расчетным методом.</p></sec><sec><title>Результаты</title><p>Результаты. При расчете концентрации жира по данным последовательности “IDEAL IQ” по формуле, использующей данные изображений Water и Fat, определена линейная зависимость измеренных значений от заданных. Точность измерения процентного содержания жира в режиме “IDEAL IQ” выше, чем в режиме “Lava-Flex”. По данным МР-последовательности “Lava-Flex” обращает на себя внимание завышение измеряемых значений концентрации жира по отношению к заданным в среднем на 57,6% на всем диапазоне при средней абсолютной разнице 17,2%.</p></sec><sec><title>Заключение</title><p>Заключение. С помощью последовательности “IDEAL IQ” были продемонстрированы результаты количественного определения фракций по формулам, в большей степени соответствующие заданным величинам в фантоме. Для корректного количественного определения фракции жира предпочтительнее проводить расчеты по данным изображениям Water и Fat с использованием формулы (2). Расчеты по изображениям In-phase и Out-phase предоставляют неоднозначные результаты. Фантомное моделирование с использованием прямых эмульсий позволило определить смещение в значениях измеряемой фракции жира.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objective</title><p>Objective. Quantitative assessment of Dixon two-point and three-point technologies operation using phantom modeling in the range from 0 to 70%.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. To simulate substances with different concentrations of the fat phase we chose direct oil-in-water emulsions. Tubes with ready-made emulsions were placed in a phantom. Emulsions based on vegetable oils were presented in the range from 0–70%. The phantom was scanned on an Optima MR450w MRI tomograph (GE, USA) in two Dixon modes: the accelerated two-point method “Lava-Flex” and the three-point method “IDEAL IQ”. A scan was performed on a GEM Flex LG Full RF coil. We calculated fat fraction (FF) using two formulas.</p></sec><sec><title>Results</title><p>Results. There is a linear relationship of the determined values when calculating the fat concentration in “IDEAL IQ” mode and using the formula based on Water and Fat. The accuracy of body fat percentage measurement in “IDEAL IQ” mode is higher than in “Lava-Flex” mode. According to the MR-sequence “Lava-Flex” draws attention to the overestimation of the measured values of the concentration of fat in relation to the specified values by an average of 57.6% over the entire range, with an average absolute difference of 17.2%.</p></sec><sec><title>Conclusion</title><p>Conclusion. Using the “IDEAL IQ” sequence, the results of the quantitative determination of fractions by formulas were demonstrated, which are more consistent with the specified values in the phantom. In order to correctly quantify the fat fraction, it is preferable to calculate from the Water and Fat images using Equation 2. Calculations from the In-phase and Out-phase images provide ambiguous results. Phantom modeling with direct emulsions allowed us to detect the shift of the measured fat fraction.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>количественная оценка жировой ткани</kwd><kwd>фантомное исследование</kwd><kwd>контроль качества</kwd><kwd>Dixon</kwd><kwd>магнитно-резонансная томография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Fat quantification</kwd><kwd>phantom study</kwd><kwd>quality control</kwd><kwd>Dixon</kwd><kwd>magnetic resonance imaging</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Статья подготовлена авторским коллективом в рамках научно-исследовательской работы (№ ЕГИСУ: АААА-А21-121012290079-2) в соответствии с Программой Департамента здравоохранения города Москвы “Научное обеспечение столичного здравоохранения” на 2020–2022 гг.</funding-statement><funding-statement xml:lang="en">This study was prepared by research (No. in the EGISU: AAAA-A21-121012290079-2) under the Program of the Moscow Healthcare Department "Scientific Support of the Capital's Healthcare" for 2020–2022.</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">Van Vucht N., Santiago R., Lottmann B. et al. 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PLoS One. 2018; 13. https://doi.org/10.1371/journal.pone.0204175</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
