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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">ldt</journal-id><journal-title-group><journal-title xml:lang="ru">Лучевая диагностика и терапия</journal-title><trans-title-group xml:lang="en"><trans-title>Diagnostic radiology and radiotherapy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-5343</issn><publisher><publisher-name>Baltic Medical Education Center</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22328/2079-5343-2025-16-3-100-108</article-id><article-id custom-type="elpub" pub-id-type="custom">ldt-1149</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>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCH</subject></subj-group></article-categories><title-group><article-title>Изучение возможностей МР-последовательности IDEAL и фракции жира в диагностике остеопороза: ретроспективное описательное одноцентровое исследование</article-title><trans-title-group xml:lang="en"><trans-title>Studying the capabilities of IDEAL MR-sequence and fat fraction in osteoporosis diagnostics: a retrospective descriptive single-center 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/0000-0002-4677-8614</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Блинов</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Blinov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Блинов Владислав Сергеевич - кандидат медицинских наук, заведующий рентгенодиагностическим отделением</p><p>624090, г. Верхняя Пышма, ул. Чайковского, д. 32</p></bio><bio xml:lang="en"><p>Vladislav S. Blinov - Cand. of Sci. (Med.), Head of the X-ray diagnostic department,</p><p>624090, Russia, Verkhnyaya Pyshma, st. Chaykovskogo, 32</p></bio><email xlink:type="simple">VladSBlinov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4092-6305</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Китаева</surname><given-names>Ю. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kitaeva</surname><given-names>Yu. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Китаева Юлия Сергеевна - кандидат медицинских наук, ассистент кафедры пропедевтики внутренних болезней,</p><p>620028, Екатеринбург, ул. Репина, д. 3</p></bio><bio xml:lang="en"><p>Yulia S. Kitaeva - Cand. of Sci. (Med.), Assistant of the Department of Propaedeutics of Internal Diseases, </p><p>620028, Ekaterinburg, st. Repina</p></bio><email xlink:type="simple">JKhema@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9523-5966</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Праскурничий</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Praskurnichiy</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Праскурничий Евгений Аркадьевич - доктор медицинских наук, заведующий кафедрой терапии медико-биологического университета,</p><p>117997, Москва, ул. Островитянова, д. 1</p></bio><bio xml:lang="en"><p>Evgeniy A. Praskurnichiy - Dr. of Sci. (Med.), Head of Department of Therapy, Medical and Biological University,</p><p>117997, Moscow, st. Ostrovityanova, 1</p></bio><email xlink:type="simple">praskurnichey@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-1073-8634</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Парфененкова</surname><given-names>К. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Parfenenkova</surname><given-names>K. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Парфененкова Кристина Дмитриевна - студентка 6 курса кафедры медицинской биохимии и биофизики,</p><p>620062, Екатеринбург, ул. Мира, д. 19</p></bio><bio xml:lang="en"><p>Kristina D. Parfenenkova - 6th year student of the Department of Medical Biochemistry and Biophysics,</p><p>620062, Ekaterinburg, st. Mira, 19</p></bio><email xlink:type="simple">kparfenenkova@yandex.ru</email><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Верхнепышминская центральная городская клиническая больница имени П. Д. Бородина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Verkhnepyshminskaya Central City Clinical Hospital named after P. D. Borodin</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Уральский государственный медицинский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural State Medical University, Ministry of Healthcare of the Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Российский национальный исследовательский медицинский университет имени Н. И. Пирогова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian National Research Medical University named after. N. I. Pirogov</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Уральский федеральный университет имени первого Президента России Б. Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University named after the first President of Russia B. N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>12</day><month>11</month><year>2025</year></pub-date><volume>16</volume><issue>3</issue><fpage>100</fpage><lpage>108</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Блинов В.С., Китаева Ю.С., Праскурничий Е.А., Парфененкова К.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Блинов В.С., Китаева Ю.С., Праскурничий Е.А., Парфененкова К.Д.</copyright-holder><copyright-holder xml:lang="en">Blinov V.S., Kitaeva Y.S., Praskurnichiy E.A., Parfenenkova K.D.</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://radiag.bmoc-spb.ru/jour/article/view/1149">https://radiag.bmoc-spb.ru/jour/article/view/1149</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ: Прочность кости на 60–70% зависит от ее минеральной плотности. Остальные 30–40% прочности зависят от ее микроархитектоники и состава. При остеопорозе происходит жировая инволюция костного мозга. На основании этого было предложено определять количество жировой ткани в кости в виде жировой фракции. Магнитно-резонансная томография может быть использована для оценки жировой фракции. МР-последовательность IDEAL недостаточно изучена для исследования фракции жира и корреляции с данными двухэнергетической рентгеновской абсорбциометрии.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ: Исследовать возможность использования фракции жира, получаемой с помощью последовательности IDEAL при магнитно-резонансной томографии, в диагностике остеопороза у женщин старше 50 лет.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ: Проанализированы магнитно-резонансные томограммы I–IV поясничных позвонков (последовательность IDEAL) и данные двухэнергетической рентгеновской абсорбциометрии 43 женщин старше 50 лет (средний возраст 63,9±8,4 года). МРТ проведена на аппарате GE Signa Voyager. ДРА проведена на остеоденситометре Dexxum. Фракция жира рассчитывалась как соотношение интенсивности сигнала на изображениях только от жира и только от воды. Статистика: Для корреляционного анализа рассчитывался коэффициент Пирсона (r), применялся ROC-анализ, производилась оценка чувствительности и специфичности. Значения считались статистически значимым при p&lt;0,05.</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ: Фракция жира менее 0,66 соответствует нормальным значениям МПК, фракция жира более 0,71 соответствует остеопорозу (p=0,030). Чувствительность МРТ для выявления остеопороза составила 99%, специфичность 87%, точность 88% (p&lt;0,05). Коэффициент корреляция между МПК и фракцией жира отрицательный и статистически значимый (r=−0,316; p=0,041). Коэффициент корреляции между Т-критерием и фракцией жира статистически значимый, отрицательный (r=−0,300; p=0,05). Коэффициент корреляции между возрастом и фракцией жира положительный, статистически значимый (r=0,374; p=0,015). Коэффициент корреляции между ИМТ и фракцией жира статистически недостоверный (r=−0,147; p=0,347).</p></sec><sec><title>ОБСУЖДЕНИЕ</title><p>ОБСУЖДЕНИЕ: При уменьшении минеральной плотности кости увеличивается фракция жира, при уменьшении Т-критерия фракция жира увеличивается, при увеличении возраста фракция жира увеличивается. Корреляции между индексом массы тела и фракцией жира не было выявлено. Данные исследования соотносятся с данными других работ.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ: МР-последовательность IDEAL является перспективной методикой оценки фракции жира. Магнитнорезонансная томография широко используется в диагностике дегенеративно-дистрофических заболеваний позвоночника. Последовательность IDEAL длится всего чуть более 3 минут и может быть добавлена к рутинному протоколу МРТ поясничного отдела позвоночника без значимого увеличения времени обследования, без назначения дополнительных методик исследования, без воздействия ионизирующего излучения и со значительным увеличением количества диагностической информации для выявления остеопороза.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION: Bone strength is 60–70% depends on its mineral density. The remaining 30–40% of strength depend on the microarchitecture and composition. Osteoporosis is characterized by fatty involution of bone marrow. Based on this, it has been proposed to determine the amount of adipose tissue in bone as a fat fraction. Magnetic resonance imaging can be used to assess the fat fraction. The IDEAL MR sequence has not been sufficiently studied for the research of fat fraction and correlation with data of dual-energy X-ray absorptiometry.</p></sec><sec><title>OBJECTIVE</title><p>OBJECTIVE: To investigate the possibility of using fat fraction derived from the IDEAL sequence in MRI in the diagnosis of osteoporosis for women over 50 years of age.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS: Magnetic resonance imaging of I–IV lumbar vertebrae (IDEAL pulse sequence) and dual-energy X-ray absorptiometry data of 43 women over 50 years of age (mean age 63.9±8.4 years) were analyzed. MRI was performed on a GE Signa Voyager. DRA was performed on a Dexxum osteodensitometer. Fat fraction was calculated as the ratio of signal intensity at fat to signal from water.</p></sec><sec><title>Statistics</title><p>Statistics: Pearson’s coefficient (r) was calculated for correlation analysis, ROC analysis was used, sensitivity and specificity were assessed. Values were considered statistically significant at p&lt;0.05.</p></sec><sec><title>RESULTS</title><p>RESULTS: Fat fraction less than 0.66 corresponds to normal IPC values, fat fraction greater than 0.71 corresponds to osteoporosis (p=0.030). The sensitivity of MRI for detecting osteoporosis was 99%, specificity 87%, accuracy 88% (p&lt;0.05). The correlation coefficient between IPC and fat fraction is negative and statistically significant (r=–0.316; (p=0.041). The correlation coefficient between T-criterion and fat fraction is statistically significant, negative (r=–0.300; (p=0.05). The correlation coefficient between age and fat fraction is positive, statistically significant (r=0.374; (p=0.015). The correlation coefficient between BMI and fat fraction is not statistically significant (r=–0.147; (p=0.347).</p></sec><sec><title>DISCUSSION</title><p>DISCUSSION: With decreasing bone mineral density the fat fraction increases, with decreasing T-score the fat fraction increases, with increasing age the fat fraction increases. No correlation was found between body mass index and fat fraction. The data of the study are consistent with the data of other studies.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION: IDEAL MR-sequencing is a promising technique for assessing fat fraction that can be used as a dose-free opportunistic screening of osteoporosis. Magnetic resonance imaging is widely used in the diagnosis of degenerative-dystrophic diseases of the spine. The IDEAL sequence lasts just over 3 minutes and can be added to the routine lumbar spine MRI protocol without significantly increasing the examination time, without prescribing additional examination methods, without exposure to ionizing radiation and with a significant increase in the amount of diagnostic information for detecting osteoporosis.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>остеопороз</kwd><kwd>двухэнергетическая рентгеновская абсорбциометрия</kwd><kwd>магнитно-резонансная томография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>osteoporosis</kwd><kwd>dual-energy X-ray absorptiometry</kwd><kwd>magnetic resonance imaging</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Низовцова Л.А., Морозов С.П., Петряйкин А.В., Босин В.Ю., Сергунова К.А., Владзимирский А.В., Шантаревич М.Ю. 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