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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">radiology</journal-id><journal-title-group><journal-title xml:lang="ru">Радиология — практика</journal-title><trans-title-group xml:lang="en"><trans-title>Radiology - Practice</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2713-0118</issn><publisher><publisher-name>Центральный научно-исследовательский институт лучевой диагностики</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52560/2713-0118-2026-1-107-120</article-id><article-id custom-type="elpub" pub-id-type="custom">radiology-818</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 СТАТЬИ</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>Возможности Т2*-релаксометрии и диффузионно-взвешенной МРТ головного мозга плода и плаценты</article-title><trans-title-group xml:lang="en"><trans-title>Possibilities of T2*-Relaxometry and Diffusion-Weighted MRI for Fetal Brain and Placental Assessment</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9384-1500</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Горностаева</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Gornostaeva</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Горностаева Алёна Марковна - младший научный сотрудник ФГБУН «Институт “МТЦ”» СО РАН; врач-рентгенолог АО «МЦ “Авиценна”» группы компаний «Мать и дитя».</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Alyona M. Gornostaeva - Junior Researcher, International Tomography Center, Siberian Branch, Russian Academy of Sciences; Radiologist at the Avicenna Medical Center of the Mother and Child Group of Companies.</p><p>Novosibirsk</p></bio><email xlink:type="simple">am.popkova@yandex.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/0000-0002-3791-7950</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Абрамова</surname><given-names>В. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Abramova</surname><given-names>V. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Абрамова Виктория Дмитриевна - младший научный сотрудник ФГБУН «Институт “МТЦ”» СО РАН; аспирант ФГБОУ ВПО «НГУ».</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Victoria D. Abramova - Junior Researcher, International Tomography Center, Siberian Branch, Russian Academy of Sciences; Postgraduate Student, Novosibirsk State University.</p><p>Novosibirsk</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/0000-0002-5332-2607</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савелов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Savelov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Савелов Андрей Александрович - кандидат физико-математических наук, старший научный сотрудник.</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Andrey A. Savelov - Candidate of Physical and Mathematical Sciences, Senior Researcher, International Tomography Center, Siberian Branch, Russian Academy of Sciences.</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-7083-3840</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Параскун</surname><given-names>К. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Paraskun</surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Параскун Ксения Алексеевна - младший научный сотрудник ФГБУН «Институт “МТЦ”» СО РАН; аспирант ФГБОУ ВПО «НГУ».</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Kseniia A. Paraskun - Junior Researcher, International Tomography Center, Siberian Branch, Russian Academy of Sciences; Postgraduate Student, Novosibirsk State University.</p><p>Novosibirsk</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/0000-0002-0095-8994</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коростышевская</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Korostyshevskaya</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коростышевская Александра Михайловна - доктор медицинских наук, ведущий научный сотрудник.</p><p>Новосибирск</p></bio><bio xml:lang="en"><p>Aleksandra M. Korostyshevskaya - Doctor of Medical Sciences, Leading Researcher, International Tomography Center, Siberian Branch, Russian Academy of Sciences.</p><p>Novosibirsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУН «Институт “Международный томографический центр”» Сибирского отделения Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>International Tomography Center, SB RAS</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУН «Институт “Международный томографический центр”» Сибирского отделения Российской академии наук; ФГБОУ ВПО «Новосибирский национальный исследовательский государственный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>International Tomography Center, SB RAS; Novosibirsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>27</day><month>02</month><year>2026</year></pub-date><volume>0</volume><issue>1</issue><fpage>107</fpage><lpage>120</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Горностаева А.М., Абрамова В.Д., Савелов А.А., Параскун К.A., Коростышевская А.М., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Горностаева А.М., Абрамова В.Д., Савелов А.А., Параскун К.A., Коростышевская А.М.</copyright-holder><copyright-holder xml:lang="en">Gornostaeva A.M., Abramova V.D., Savelov A.A., Paraskun K.A., Korostyshevskaya A.M.</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.radp.ru/jour/article/view/818">https://www.radp.ru/jour/article/view/818</self-uri><abstract><p>Гипоксия — одна из ведущих причин нарушений внутриутробного развития и неблагоприятных перинатальных исходов. Метод Т2*-релаксометрии, основанный на BOLD-эффекте, позволяет неинвазивно количественно оценить тканевую оксигенацию. Картирование измеряемого коэффициента диффузии (ИКД) используется для диагностики ишемии мозга и как количественный биомаркер пренатального созревания мозга.</p><sec><title>Цель исследования</title><p>Цель исследования: сравнить возможность Т2*-релаксометрии и ИКД в оценке гестационных особенностей, а также гипоксических состояний головного мозга плода и плаценты.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Проведено ретроспективное поперечное исследование 200 пренатальных МРТ с 18–38-й недели гестации (НГ), выполненных в 2024–2025 гг. на 1,5 Тл и 3 Тл томографах Philips (в МТЦ СО РАН, г. Новосибирск). Для Т2*-релаксометрии ис- пользована многоэховая эхо-планарная последовательность с однократным возбуждением (SS-EPI) с TE = 25–225 мс. Для ИКД – SSh DWI (b = 0,700). Данные Т2*-времени релакса- ции (ВР) и ИКД получены с помощью ROI-анализа вручную размеченных областей мозга и плаценты. Статистический анализ включал критерии Шапиро — Уилка, корреляции Пир- сона и Спирмена, парный t-тест, ANOVA и Kruskal — Wallis (p &lt; 0,05).</p></sec><sec><title>Результаты</title><p>Результаты. Т2*-картирование головного мозга 110 плодов (66 — на 1,5 Тл; 44 — на 3 Тл томографах) и 50 плацент (30 — на 1,5 Тл; 20 — на 3 Тл томографах) показало снижение Т2*-ВР с увеличением срока гестации (p = 0,0018 для мозга, p = 0,05 для плаценты). ИКД головного мозга 126 плодов также обратно коррелирует со сроком гестации (p = 0,0135), тог- да как для плацент зависимость Т2*-ВР и ИКД от срока гестации не выявлена (p &gt; 0,209). При групповом анализе отмечено снижение Т2*-ВР головного мозга у плодов после 29 НГ в сравнении с группой до 29 НГ (p = 0,001).</p></sec><sec><title>Выводы</title><p>Выводы. Установлена зависимость Т2*-ВР и ИКД головного мозга от гестационного срока, более выраженная в третьем триместре. Т2*-релаксометрия и ИКД применимы для количественной оценки развития мозга плода и плаценты, имеют потенциал для раннего неинвазивного выявления гипоксических состояний.</p></sec></abstract><trans-abstract xml:lang="en"><p>Hypoxia is one of the leading causes of impaired intrauterine development and adverse perinatal outcomes. The T2*-relaxometry method, based on the BOLD effect, enables noninvasive quantitative assessment of tissue oxygenation. Apparent diffusion coefficient (ADC) mapping is employed in the diagnosis of cerebral ischemia and serves as a quantitative biomarker of prenatal brain maturation.</p><sec><title>Objective</title><p>Objective. To compare the utility of T2*-relaxometry and ADC mapping in assessing gestational characteristics, as well as hypoxic conditions of the fetal brain and placenta.</p></sec><sec><title>Materials and Methods</title><p>Materials and Methods. A retrospective cross-sectional analysis was conducted on 200 prenatal MRI examinations performed between 18 and 38 weeks of gestation (WG) from 2024 to 2025, using 1.5 T and 3 T Philips scanners at the MTC SB RAS (Novosibirsk, Russia). T2*- relaxometry was performed using a multi-echo single-shot echo-planar imaging (SS-EPI) sequence with TE ranging from 25 to 225 ms. ADC mapping was conducted using single-shot diffusion-weighted imaging (SSh DWI) with b-values of 0 and 700 s/mm². T2*-relaxation times (RT) and ADC values were obtained through ROI analysis of manually segmented regions of the brain and placenta. Statistical analysis included the Shapiro — Wilk test, Pearson and Spearman correlations, paired t-test, ANOVA, and Kruskal — Wallis test, with significance set at p &lt; 0.05.</p></sec><sec><title>Results</title><p>Results. T2*-mapping of the brain in 110 fetuses (66 scanned at 1.5 T; 44 at 3 T) and of the placenta in 50 cases (30 at 1.5 T; 20 at 3 T) demonstrated a decrease in T2*-RT with advancing gestational age (p = 0.0018 for the brain, p = 0.05 for the placenta). ADC values of the fetal brain (n = 126) were also inversely correlated with gestational age (p = 0.0135), whereas no significant gestational dependence was found for placental T2*-RT or ADC values (p &gt; 0.209). Group analysis revealed a significant reduction in fetal brain T2*-RT after 29 WG compared to fetuses before 29 WG (p = 0.001).</p></sec><sec><title>Conclusions</title><p>Conclusions. Both T2*-RT and ADC values of the fetal brain are significantly influenced by gestational age, with more pronounced changes observed in the third trimester. T2*-relaxometry and ADC mapping are applicable for quantitative evaluation of fetal brain and placental deve- lopment and hold potential for early, noninvasive detection of hypoxic conditions.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пренатальная МРТ</kwd><kwd>Т2*-релаксометрия</kwd><kwd>ИКД</kwd><kwd>гипоксия мозга плода</kwd><kwd>плацента</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Prenatal MRI</kwd><kwd>T2*-relaxometry</kwd><kwd>ADC-mapping</kwd><kwd>Fetal Brain Hypoxia</kwd><kwd>Placenta</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 25-25-00023.</funding-statement><funding-statement xml:lang="en">The study was supported by the Russian Science Foundation, grant No. 25-25-00023.</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">Макогон А. 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