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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Obstetrics and Gynecology</journal-id><journal-title-group><journal-title xml:lang="en">Obstetrics and Gynecology</journal-title><trans-title-group xml:lang="ru"><trans-title>Акушерство и гинекология</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0300-9092</issn><issn publication-format="electronic">2412-5679</issn><publisher><publisher-name xml:lang="en">Bionika Media</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">691932</article-id><article-id pub-id-type="doi">10.18565/aig.2025.152</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Comparative analysis of the accuracy of ultrasonography and magnetic resonance imaging in estimating fetal weight</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнительный анализ точности ультразвукового исследования и магнитно-резонансной томографии в определении предполагаемой массы тела плода</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4043-907X</contrib-id><name-alternatives><name xml:lang="en"><surname>Syrkashev</surname><given-names>Egor M.</given-names></name><name xml:lang="ru"><surname>Сыркашев</surname><given-names>Егор Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, Senior Researcher at the Radiology Department</p></bio><bio xml:lang="ru"><p>к.м.н., c.н.с. отделения лучевой диагностики</p></bio><email>e_syrkashev@oparina4.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0012-6688</contrib-id><name-alternatives><name xml:lang="en"><surname>Nikolaeva</surname><given-names>Anastasia V.</given-names></name><name xml:lang="ru"><surname>Николаева</surname><given-names>Анастасия Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, Chief Physician</p></bio><bio xml:lang="ru"><p>к.м.н., главный врач</p></bio><email>a_nikolaeva@oparina4.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-2049-3119</contrib-id><name-alternatives><name xml:lang="en"><surname>Stoliarova</surname><given-names>Elizaveta V.</given-names></name><name xml:lang="ru"><surname>Столярова</surname><given-names>Елизавета Валерьевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD student, 1st Obstetric Department of Pregnancy Pathology</p></bio><bio xml:lang="ru"><p>аспирант, 1-е отделение акушерское патологии беременности</p></bio><email>ev_stolyarova@oparina4.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4068-9805</contrib-id><name-alternatives><name xml:lang="en"><surname>Kholin</surname><given-names>Alexey M.</given-names></name><name xml:lang="ru"><surname>Холин</surname><given-names>Алексей Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, Head of the Department of Telemedicine</p></bio><bio xml:lang="ru"><p>к.м.н., заведующий отделом телемедицины и инновационного развития</p></bio><email>a_kholin@oparina4.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6266-2067</contrib-id><name-alternatives><name xml:lang="en"><surname>Gorina</surname><given-names>Ksenia A.</given-names></name><name xml:lang="ru"><surname>Горина</surname><given-names>Ксения Алексеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD, Junior Researcher at the 1 Department of Obstetric Pathology of Pregnancy</p></bio><bio xml:lang="ru"><p>к.м.н., м.н.с. 1 отделения акушерского патологии беременности</p></bio><email>k_gorina@oparina4.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7764-8073</contrib-id><name-alternatives><name xml:lang="en"><surname>Kesova</surname><given-names>Marina I.</given-names></name><name xml:lang="ru"><surname>Кесова</surname><given-names>Марина Исааковна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Med. Sci., Senior Researcher at the Obstetric Department</p></bio><bio xml:lang="ru"><p>д.м.н., с.н.с. акушерского отделения</p></bio><email>m_kesova@oparina4.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8572-1971</contrib-id><name-alternatives><name xml:lang="en"><surname>Baev</surname><given-names>Oleg R.</given-names></name><name xml:lang="ru"><surname>Баев</surname><given-names>Олег Радомирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Med. Sci., Professor, Head of the 1st Maternity Department, Professor at the Department of Obstetrics, Gynecology, Perinatology, and Reproductology</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, руководитель 1-го родильного отделения, профессор кафедры акушерства, гинекологии, перинатологии и репродуктологии</p></bio><email>o_baev@oparina4.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5087-5946</contrib-id><name-alternatives><name xml:lang="en"><surname>Kan</surname><given-names>Natalia E.</given-names></name><name xml:lang="ru"><surname>Кан</surname><given-names>Наталья Енкыновна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Med. Sci., Professor, Deputy Director for Science</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, заслуженный деятель науки Российской Федерации, заместитель директора по научной работе</p></bio><email>kan-med@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1377-3128</contrib-id><name-alternatives><name xml:lang="en"><surname>Gus</surname><given-names>Aleksandr I.</given-names></name><name xml:lang="ru"><surname>Гус</surname><given-names>Александр Иосифович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Med. Sci., Professor, Chief Researcher at the Department of Ultrasound and Functional Diagnostics, Head of the Department of Ultrasound Diagnostics, Medical Institute</p></bio><bio xml:lang="ru"><p>д.м.н., профессор, главный н.с., отделение ультразвуковой и функциональной диагностики, Отдел визуальной диагностики, заведующий кафедрой ультразвуковой диагностики Факультета непрерывного медицинского образования Медицинского института</p></bio><email>a_gus@oparina4.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Academician V.I. Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Ministry of Health of the Russia</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр акушерства, гинекологии и перинатологии имени академика В.И. Кулакова» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia (Sechenov University), Moscow, Russia</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Первый Московский государственный медицинский университет имени И.М. Сеченова» Минздрава России (Сеченовский университет)</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Patrice Lumumba Peoples' Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «Российский университет дружбы народов имени Патриса Лумумбы»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-10-09" publication-format="electronic"><day>09</day><month>10</month><year>2025</year></pub-date><issue>9</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>82</fpage><lpage>88</lpage><history><date date-type="received" iso-8601-date="2025-10-03"><day>03</day><month>10</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-10-03"><day>03</day><month>10</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Bionika Media</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, ООО «Бионика Медиа»</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Bionika Media</copyright-holder><copyright-holder xml:lang="ru">ООО «Бионика Медиа»</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0300-9092/article/view/691932">https://journals.eco-vector.com/0300-9092/article/view/691932</self-uri><abstract xml:lang="en"><p><bold>Objective: </bold>To compare the accuracy of ultrasonography (USG) and magnetic resonance imaging (MRI) in determining estimated fetal weight (EFW).</p> <p><bold>Materials and methods:</bold> This prospective study included 103 pregnant women who underwent both MRI and USG before delivery. The EFW based on MRI data was calculated using the formula by Baker et al., while the EFW based on USG data was calculated using the Hadlock et al. formula. The EFW values were assessed using absolute measurements and on a percentile scale (INTERGROWTH-21st).</p> <p><bold>Results:</bold> The correlation coefficient between EFW based on USG data and the newborn's birth weight was 0.831 (p&lt;0.001), while for MRI, it was 0.941 (p&lt;0.001). The mean absolute error (MAE) of EFW in absolute values for USG was 145.68 (427.42) g, and for MRI, it was 117.83 (221.98) g, on a percentile scale, the MAE for USG was 4.17 (15.68), for MRI, it was 3.16 (7.03). The correlation coefficient between EFW above the 90th percentile was 0.374 (p=0.041) for USG and 0.855 (p&lt;0.001) for MRI. The MAE for determining EFW (&gt;90th percentile) was 173.93 (432.16) g for USG and 122.0 (202.82) g for MRI. On a percentile scale, the MAE was 0.38 (6.07) for USG and 0.76 (2.56) for the MRI. The area under the curve (ROC AUC) for identifying cases with birth weights &gt; 4000 g was 0.916 (95% CI: 0.860–0.973) for USG and 0.986 (95% CI: 0.967–1.000) for MRI.</p> <p><bold>Conclusion:</bold> EFW determination based on MRI data is more accurate than that based on USG data, with the most significant differences noted in cases of fetal macrosomia. Developing machine learning algorithms is essential to reduce the time required for segmenting areas of interest, thereby enhancing the role of artificial intelligence in automating the EFW determination processes. Further research is necessary to establish the optimal timing and indications for using MRI as an additional method for determining the EFW.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Цель: </bold>Сравнительный анализ точности ультразвукового исследования (УЗИ) и магнитно-резонансной томографии (МРТ) в определении предполагаемой массы тела плода (ПМП).</p> <p><bold>Материалы и методы: </bold>В проспективное исследование включили 103 беременных, которым было выполнено МРТ и УЗИ до родоразрешения. ПМП по данным МРТ вычисляли с использованием формулы Baker et al. ПМП по данным УЗИ вычисляли с использованием формулы Hadlock et al. ПМП по данным УЗИ и МРТ определяли в абсолютных значениях и по перцентильной шкале (INTERGROWTH-21st).</p> <p><bold>Результаты: </bold>Коэффициент корреляции между ПМП по данным УЗИ и массой тела новорожденного составил 0,831 (p&lt;0,001), для МРТ – 0,941 (p&lt;0,001). Средняя абсолютная ошибка (MAE) определения ПМП в абсолютных значениях для УЗИ составила 145,68 (427,42) г, для МРТ – 117,83 (221,98) г, в перцентильной шкале для УЗИ – 4,17 (15,68), для МРТ – 3,16 (7,03). Коэффициент корреляции между ПМП по данным УЗИ и массой тела новорожденного более 90 процентиль составил 0,374 (p=0,041), для МРТ – 0,855 (p&lt;0,001). Средняя абсолютная ошибка (MAE) определения ПМП (&gt;90 процентиль) в абсолютных значениях для УЗИ составила 173,93 (432,16) г, для МРТ – 122,0 (202,82) г, в перцентильной шкале для УЗИ – 0,38 (6,07), для МРТ – 0,76 (2,56). Площадь под кривой (ROC AUC) для определения случаев с массой тела новорожденного более 4000 г для УЗИ составила 0,916 (95% ДИ: 0,860–0,973), для МРТ – 0,986 (95% ДИ: 0,967–1,000).</p> <p><bold>Заключение: </bold>Определение ПМП по данным МРТ является более точным, чем по данным УЗИ; наиболее значимые различия наблюдаются при макросомии плода. Необходима разработка алгоритмов машинного обучения для минимизации времени, необходимого для сегментации зон интереса, что сделает искусственный интеллект ценным вспомогательным инструментом для автоматизации процессов определения ПМП. Требуется проведение дальнейших исследований, направленных на определение оптимальных сроков выполнения и показаний к МРТ в качестве дополнительного метода определения ПМП.</p></trans-abstract><kwd-group xml:lang="en"><kwd>estimated fetal weight</kwd><kwd>prenatal diagnosis</kwd><kwd>fetal MRI</kwd><kwd>USG</kwd><kwd>macrosomia</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>предполагаемая масса плода</kwd><kwd>пренатальная диагностика</kwd><kwd>фетальная МРТ</kwd><kwd>УЗИ</kwd><kwd>макросомия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Щербакова Е.А., Баранов А.Н., Истомина Н.Г. Исходы ранней и поздней форм задержки роста плода в зависимости от критериев диагностики. 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