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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">uzspbgmu</journal-id><journal-title-group><journal-title xml:lang="ru">Учёные записки Первого Санкт-Петербургского государственного медицинского университета имени академика И. П. Павлова</journal-title><trans-title-group xml:lang="en"><trans-title>The Scientific Notes of the Pavlov University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1607-4181</issn><issn pub-type="epub">2541-8807</issn><publisher><publisher-name>Academician I.P. Pavlov First St. Petersburg State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24884/1607-4181-2026-33-1-84-93</article-id><article-id custom-type="elpub" pub-id-type="custom">uzspbgmu-1209</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 РАБОТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL PAPERS</subject></subj-group></article-categories><title-group><article-title>Топическая ПЭТ/КТ-диагностика рецидива медуллярного рака щитовидной железы: какой радиофармпрепарат предпочтительнее?</article-title><trans-title-group xml:lang="en"><trans-title>PET/CT in topical diagnostics of recurrent medullary thyroid cancer: which radiopharmaceutical is preferred?</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7344-1726</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Центр</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsentr</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Центр Никита Вячеславович, аспирант кафедры ядерной медицины и радиационных технологий с клиникой Института медицинского образования</p><p>197341, Санкт-Петербург, ул. Аккуратова, д. 2</p></bio><bio xml:lang="en"><p>Tsentr Nikita V., Postgraduate Student of the Department of Nuclear Medicine and Radiation Technologies with the Clinic of the Institute of Medical Education</p><p>2, Akkuratova str., Saint Petersburg, 197341</p></bio><email xlink:type="simple">ni.tse@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/0000-0002-7086-9153</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рыжкова</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryzhkova</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Рыжкова Дарья Викторовна, доктор медицинских наук, профессор РАН, зав. кафедрой ядерной медицины и радиационных технологий с клиникой Института медицинского образования, главный научный сотрудник Научно-исследовательского отдела ядерной медицины и тераностики</p><p>197341, Санкт-Петербург, ул. Аккуратова, д. 2</p></bio><bio xml:lang="en"><p>Ryzhkova Daria V., Dr. of Sci. (Med.), Professor of the Russian Academy of Sciences, Head of the Department of Nuclear Medicine and Radiation Technologies with the Clinic of the Institute of Medical Education, Chief Research Fellow of the Scientific Research Department of Nuclear Medicine and Theranostics</p><p>2, Akkuratova str., Saint Petersburg, 197341</p></bio><email xlink:type="simple">d_ryjkova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр имени В. А. Алмазова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Almazov National Medical Research Centre</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>09</day><month>06</month><year>2026</year></pub-date><volume>33</volume><issue>1</issue><fpage>84</fpage><lpage>93</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Центр Н.В., Рыжкова Д.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Центр Н.В., Рыжкова Д.В.</copyright-holder><copyright-holder xml:lang="en">Tsentr N.V., Ryzhkova D.V.</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.sci-notes.ru/jour/article/view/1209">https://www.sci-notes.ru/jour/article/view/1209</self-uri><abstract><sec><title>Введение</title><p>Введение. Медуллярный рак щитовидной железы (МРЩЖ) характеризуется высоким риском рецидивов в послеоперационном периоде, для топической локализации которых стандартные методы визуализации недостаточно эффективны. Определение уровня кальцитонина и РЭА является ключевым тестом для мониторинга появления рецидивных опухолевых очагов, но не указывает на их локализацию. На основании накопленного мирового опыта установлено, что наиболее перспективными методами для определения местного рецидива и локализации метастазов МРЩЖ являются ПЭТ/КТ с [18F]-ДОФА и [68Ga]-DOTA-пептидами, однако данные об их сравнительной эффективности остаются противоречивыми.</p></sec><sec><title>Цель</title><p>Цель. Выполнить аналитическое сопоставление диагностических возможностей ПЭТ/КТ с [18F]-ДОФА и [68Ga]-DOTA-пептидами для топической диагностики рецидивных очагов и оценки опухолевой нагрузки при биохимическом рецидиве МРЩЖ.</p></sec><sec><title>Методы и материалы</title><p>Методы и материалы. Проведен ретроспективный анализ исследований 100 пациентов с биохимическим рецидивом МРЩЖ (уровень кальцитонина &gt;10 пг/мл), прошедших ПЭТ/КТ с [68Ga]-DOTA-пептидами и/или с [18F]-ДОФА, включая исследование 31 пациента, которым выполнялось исследование с обоими радиофармацевтическими лекарственными препаратами (РФЛП). Анализ включал оценку количества и локализацию очагов, интенсивность накопления в них РФЛП, а также поиск корреляции между уровнем базального кальцитонина сыворотки крови и результатов ПЭТ/КТ.</p></sec><sec><title>Результаты</title><p>Результаты. У 67 из 100 пациентов (67 %) с помощью ПЭТ/КТ были обнаружены рецидивные очаги. Прямое сравнение результатов ПЭТ/КТ с [68Ga]-DOTA-пептидами и [18F]-ДОФА у 31 пациента не выявило статистически значимых различий между двумя РФЛП в количестве обнаруженных очагов (критерий Уилкоксона – 1,667, p=0,096). Однако в единичных случаях наблюдались дискордантные результаты: у 2 пациентов [18F]-ДОФА выявил больше очагов (в лимфатических узлах, печени, костях), у 1 пациента [68Ga]-DOTA-пептиды показали более высокую контрастность очагов. При значениях базального кальцитонина сыворотки крови ниже 150 пг/мл опухолевые очаги были обнаружены почти у половины пациентов при ПЭТ/КТ как с [18F]-ДОФА (45 %), так и с [68Ga]-ДОТА-пептидами (42 %). Отмечалась лишь умеренная положительная корреляция уровня онкомаркера с количеством выявляемых очагов (коэффициента Спирмена 0,47 и 0,35, для [18F]-ДОФА и [68Ga]-ДОТА-пептидов соответственно, p&lt;0,05) и суммарным объемом ПЭТ-позитивной опухолевой ткани (коэффициента Спирмена 0,39 и 0,26, для [18F]-ДОФА и [68Ga]-ДОТА-пептидов соответственно, p&gt;&lt;0,05).</p></sec><sec><title>Выводы</title><p>Выводы. ПЭТ/КТ с [18F]-ДОФА и [68Ga]-DOTA-пептидами являются эффективными и взаимодополняющими методами топической диагностики при биохимическом рецидиве МРЩЖ. В случаях распространенных форм МРЩЖ предпочтительно выполнение комплексного ПЭТ/КТ-исследования с применением обоих РФЛП, что обеспечит максимальную диагностическую точность и определит дальнейшую стратегию персонализированного лечения.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. Medullary thyroid cancer (MTC) is characterized by a high risk of recurrence in the postoperative period, for the topographic localization of which, standard imaging methods are not sufficiently effective. Determination of the level of calcitonin and CEA is key test for monitoring the appearance of recurrent tumor foci, but does not indicate their localization. Based on the accumulated global experience, it has been established that the most promising methods for determining local recurrence and localization of metastases of MTC are PET/CT with [18F]-DOPA and [68Ga]-DOTA-peptides, however, data on their comparative effectiveness remain controversial.</p><p>The objective was to perform an analytical comparison of the diagnostic capabilities of PET/CT with [18F]-DOPA and [68Ga]-DOTA-peptides for the topographic diagnosis of recurrent foci and assessment of the tumor burden in biochemical recurrence of MTC. </p></sec><sec><title>Methods and materials</title><p>Methods and materials. A retrospective analysis of studies of 100 patients with biochemical recurrence of MTC (calcitonin level&gt; 10 pg/ml) who underwent PET/CT with [68Ga]-DOTA-peptides and/or with [18F]-DOPA, including the study of 31 patients with both radiopharmaceuticals. The analysis included an assessment of the number, localization and intensity of the accumulation foci of radiopharmaceuticals, an assessment of the correlation of the basal serum calcitonin level and the results of PET/CT.</p></sec><sec><title>Results</title><p>Results. In 67 out of 100 patients (67%), recurrent foci were detected using PET/CT. Direct comparison of PET/CT scans with [68Ga]-DOTA-peptides and [18F]-DOPA in 31 patients did not show any statistically significant differences in the number of lesions detected between the two radiopharmaceuticals (Wilcoxon – 1.667, p=0.096). However, in some cases, discordant results were observed: in 2 patients, [18F]-DOPA revealed more foci (in the lymph nodes, liver, and bones), and in 1 patient, [68Ga]-DOTA-peptides showed significantly higher contrast of the foci. With serum basal calcitonin values below 150 pg/ml, tumor foci were detected in almost half of PET/CT patients with both [18F]-DOPA (45 %) and [68Ga]-DOT peptides (42 %). There was only a moderate positive correlation between the level of the cancer marker and the number of detected foci (Spearman 0.47 and 0.35, for [18F]-DOPA and [68Ga]-DOT peptides, respectively, p&lt;0.05) and the total volume of PET-positive tumor tissue (Spearman 0.39 and 0.26, for [18F]-DOPA and [68Ga]-DOT peptides, respectively, p&gt;&lt;0.05).</p></sec><sec><title>Conclusion</title><p>Conclusion. PET/CT with [18F]-DOPA and with [68Ga]-DOTA-peptides are highly informative for the topographic diagnosis of recurrent tumor foci in MTC with comparable diagnostic efficiency. In cases of common forms of MTC, it is preferable to perform a comprehensive PET/CT scan using both radiopharmaceuticals, which will ensure maximum diagnostic accuracy and determine the future strategy of personalized treatment.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>медуллярный рак щитовидной железы</kwd><kwd>МРЩЖ</kwd><kwd>ПЭТ/КТ</kwd><kwd>[18F]-ДОФА</kwd><kwd>[68Ga]-DOTA-пептиды</kwd><kwd>кальцитонин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>medullary thyroid cancer</kwd><kwd>MTC</kwd><kwd>PET/CT</kwd><kwd>[18F]-DOPA</kwd><kwd>[68Ga]-DOTA-peptides</kwd><kwd>calcitonin</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">Schlumberger M., Bastholt L., Dralle H. et al. 2012 European Thyroid Association Guidelines for Metastatic Medullary Thyroid Cancer // Eur Thyroid J. – 2012. – Vol. 1, № 1. – P. 5–14. https://doi.org/10.1159/000336977.</mixed-citation><mixed-citation xml:lang="en">Schlumberger M., Bastholt L., Dralle H. et al. 2012 European Thyroid Association Guidelines for Metastatic Medullary Thyroid Cancer // Eur Thyroid J. 2012;1(1):5–14. https://doi.org/10.1159/000336977.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Kim M., Kim B. 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