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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">10.22328/2079-5343-2024-15-1-87-95</article-id><article-id custom-type="elpub" pub-id-type="custom">ldt-976</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>Диагностические возможности ПЭТ/КТ с 18F-ДОФА при биохимическом рецидиве медуллярного рака щитовидной железы: ретроспективное исследование</article-title><trans-title-group xml:lang="en"><trans-title>Diagnostic capabilities of PET/CT with 18F-DOPA in biochemical recurrence of medullary thyroid carcinoma: a retrospective 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/0000-0002-7344-1726</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>Nikita V. Tsentr — postgraduate of the Department of Nuclear Medicine and Radiation Technologies with the clinic of the Institute of Medical Education </p><p>197341, St. Petersburg, st. Akkuratova, d. 2</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"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зырянова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zyryanova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Зырянова Александра Андреевна — клинический ординатор 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>Aleksandra A. Zyryanova — resident of the Department of Nuclear Medicine and Radiation Technologies with the clinic of the Institute of Medical Education</p><p>197341, St. Petersburg, st. Akkuratova, d. 2</p><p>   </p></bio><email xlink:type="simple">maksa399043@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/0009-0002-4220-4901</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Руснак</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rusnak</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Руснак Маргарита Андреевна — лаборант-исследователь Научно-исследовательского отдела ядерной медицины и тераностики</p><p>197341, Санкт-Петербург, ул. Аккуратова, д. 2</p></bio><bio xml:lang="en"><p>Margarita A. Rusnak — laboratory researcher of the Research Department of Nuclear Medicine and Theranostics</p><p>197341, St. Petersburg, st. Akkuratova, d. 2</p><p>   </p></bio><email xlink:type="simple">margarita.rusnak@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/0000-0002-7086-9153</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, заведующая кафедрой ядерной медицины и радиационных технологий с клиникой Института медицинского образования, главный научный сотрудник Научно-исследовательского отдела ядерной медицины </p><p>197341, Санкт-Петербург, ул. Аккуратова, д. 2</p></bio><bio xml:lang="en"><p>Daria V. Ryzhkova — Dr. of Sci. (Med.), Professor of the Russian Academy of Sciences, Head of the Department of Nuclear Medicine and Radiation Technologies with a clinic of the Institute of Medical Education, Chief Researcher of the Research Department of Nuclear Medicine and Theranostics</p><p>197341, St. Petersburg, st. Akkuratova, d. 2</p><p>   </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>2024</year></pub-date><pub-date pub-type="epub"><day>09</day><month>04</month><year>2024</year></pub-date><volume>15</volume><issue>1</issue><fpage>87</fpage><lpage>95</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Центр Н.В., Зырянова А.А., Руснак М.А., Рыжкова Д.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Центр Н.В., Зырянова А.А., Руснак М.А., Рыжкова Д.В.</copyright-holder><copyright-holder xml:lang="en">Tsentr N.V., Zyryanova A.A., Rusnak M.A., 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://radiag.bmoc-spb.ru/jour/article/view/976">https://radiag.bmoc-spb.ru/jour/article/view/976</self-uri><abstract><sec><title>ВВЕДЕНИЕ</title><p>ВВЕДЕНИЕ: Медуллярный рак щитовидной железы (МРЩЖ) — редкое злокачественное новообразование щитовидной железы нейроэндокринной природы. В большинстве случаев спорадический МРЩЖ диагностируется на поздних стадиях в виду отсутствия специфичной симптоматики. Основным методом лечения МРЩЖ является хирургический — тиреоидэктомия и в большинстве случаев шейная лимфодиссекция. Современные международные рекомендации предлагают использование уровня базального кальцитонина крови и ракового эмбрионального антигена (РЭА) в качестве маркеров биохимического рецидива. При возникновении биохимического рецидива заболевания целесообразно проводить поиск опухолевых очагов независимо от уровня онкомаркеров. Наибольшей чувствительностью и специфичностью для поиска местного рецидива и отдаленных метастазов обладает метод позитронно-эмиссионной томографии, совмещенной с рентгеновской компьютерной томографией (ПЭТ/КТ). Методы анатомической визуализации (рентгеновская компьютерная томография (КТ), магнитно-резонансная томография (МРТ)), обладают неоптимальной чувствительностью и специфичностью в поиске рецидивной опухоли.</p></sec><sec><title>ЦЕЛЬ</title><p>ЦЕЛЬ: Изучить диагностические возможности ПЭТ/КТ с 18F-ДОФА у пациентов с биохимическим рецидивом медуллярного рака щитовидной железы в зависимости от концентрации кальцитонина в плазме крови.</p></sec><sec><title>МАТЕРИАЛЫ И МЕТОДЫ</title><p>МАТЕРИАЛЫ И МЕТОДЫ: Для оценки диагностических возможностей ПЭТ/КТ с 18F-ДОФА у пациентов с биохимическим рецидивом медуллярного рака щитовидной железы проведен анализ 81 исследования ПЭТ/КТ у пациентов после тиреоидэктомии. В большинстве случаев (76/81) на момент исследования у пациентов определялся повышенный уровень базального кальцитонина (&gt;10 пг/мл, в том числе, в 52/81 случаев &gt;150 пг/мл), что позволило диагностировать биохимический рецидив заболевания. В 6 случаях уровень кальцитонина составлял ≤10 пг/мл. Обработка результатов ПЭТ/КТ проводилась посредством визуального анализа изображений, измерения полуколичественного показателя максимального стандартизированного уровня накопления РФЛП, нормализованного на безжировую массу тела (SUVlbm max) и суммарного объема ПЭТ-позитивной опухолевой ткани (метаболический объем).</p></sec><sec><title>РЕЗУЛЬТАТЫ</title><p>РЕЗУЛЬТАТЫ: В 41 исследовании были выявлены очаги патологического накопления 18F-ДОФА, соответствующие рецидивным опухолевым очагам. ДОФА-негативные результаты у пациентов с повышенным уровнем кальцитонина были расценены как ложноотрицательные. Наибольшая чувствительность метода достигалась при уровне кальцитонина &gt;150 пг/мл. Определена заметная положительная корреляция между концентрацией базального кальцитонина сыворотки крови, количеством патологических очагов гипераккумуляции 18F-ДОФА и суммарным метаболическим объемом опухолевой ткани. В большинстве случаев биохимического рецидива метод ПЭТ превосходил метод КТ в обнаружении рецидивных опухолевых очагов.</p></sec><sec><title>ЗАКЛЮЧЕНИЕ</title><p>ЗАКЛЮЧЕНИЕ: ПЭТ/КТ с 18F-ДОФА является наиболее информативным методом для молекулярной и структурной визуализации у пациентов с биохимическим рецидивом медуллярного рака щитовидной железы. Результаты исследования напрямую коррелируют с уровнем базального кальцитонина крови.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>INTRODUCTION</title><p>INTRODUCTION: Medullary thyroid carcinoma (MTС) is a rare neuroendocrine malignant neoplasm of the thyroid gland. In most cases, sporadic MTС is diagnosed at late stages due to the absence of specific symptoms. The main method of treatment of MTС is surgical — thyroidectomy and in most cases cervical lymphodissection. Current international guidelines suggest the use of basal calcitonin levels and cancer embryonic antigen (CEA) as markers of biochemical recurrence. In biochemical recurrence of the disease, it is advisable to search for tumor foci regardless of the level of cancer markers. Positron emission tomography combined with computed tomography (PET/CT) has the highest sensitivity and specificity for searching for local recurrence and distant metastases. Anatomical imaging methods (computed tomography (CT), magnetic resonance imaging (MRI)) have suboptimal sensitivity and specificity in detection of a recurrent tumor.</p></sec><sec><title>OBJECTIVE</title><p>OBJECTIVE: To explore the diagnostic capabilities of PET/CT with 18F-DOPA in patients with biochemical recurrence of medullary thyroid carcinoma, depending on the concentration of calcitonin in blood plasma.</p></sec><sec><title>MATERIALS AND METHODS</title><p>MATERIALS AND METHODS: To evaluate the diagnostic capabilities of PET/CT with 18F-DOPA in patients with biochemical recurrence of medullary thyroid carcinoma, 81 PET/CT studies were analyzed in patients after thyroidectomy. In most cases (76/81), at the time of the study, patients had elevated basal calcitonin levels (&gt;10 pg/ml, including in 52/81 cases &gt;150 pg/ml), which corresponded to a biochemical recurrence of the disease. In 6 cases, the calcitonin level was &lt;10 pg/ml. PET/CT results were processed by visual image analysis, measurement of a semi-quantitative indicator of the maximal standardized level of radiopharmaceutical accumulation normalized to lean body mass (SUVlbm max) and the total volume of PET-positive tumor tissue (metabolic tumor volume).</p></sec><sec><title>RESULTS</title><p>RESULTS: In 41 studies, foci of pathological accumulation of 18F-DOPA were identified, corresponding to recurrent tumor foci. DOPA-negative results in patients with elevated calcitonin levels were regarded as false negative. The highest sensitivity of the method was achieved at calcitonin levels &gt;150 pg/ml. A noticeable positive correlation was found between the concentration of basal serum calcitonin, the number of pathological foci of 18F-DOPA hyperaccumulation and the total metabolic volume of tumor tissue. In most cases of biochemical recurrence, the PET method was superior to the CT method in detecting recurrent tumor foci.</p></sec><sec><title>CONCLUSION</title><p>CONCLUSION: PET/CT with 18F-DOPA is the most informative method for molecular and structural imaging in patients with biochemical recurrence of medullary thyroid carcinoma. The results of the study directly correlate with the level of basal calcitonin in the blood.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>медуллярный рак щитовидной железы</kwd><kwd>ПЭТ/КТ</kwd><kwd>18F-фторДОФА</kwd><kwd>биохимический рецидив</kwd><kwd>кальцитонин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>medullary thyroid carcinoma</kwd><kwd>PET/CT</kwd><kwd>18F-L-dihydroxyphenylalanine</kwd><kwd>18F-DOPA</kwd><kwd>biochemical recurrence</kwd><kwd>calcitonin</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена инициативно за счет собственных средств ФГБУ «НМИЦ им. В.А.Алмазова» Минздрава России.</funding-statement><funding-statement xml:lang="en">The work was carried out proactively at the expense of own funds of the Almazov National Medical Research Centre</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">Кондратович В.А., Жуковец А.Г., Леонова Т.А. Клинико-эпидемиологическая характеристика и прогноз клинического течения медуллярного рака щитовидной железы // Онкологический журнал. 2021. 15, № 2. С. 13–18.</mixed-citation><mixed-citation xml:lang="en">Kondratovich V.A., Zhukovets A.G., Leonova T.A. Clinical and epidemiological characteristics and prognosis of the clinical course of medullary thyroid cancer. 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