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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">ojrdrt</journal-id><journal-title-group><journal-title xml:lang="ru">Онкологический журнал: лучевая диагностика, лучевая терапия</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of oncology: diagnostic radiology and radiotherapy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2587-7593</issn><issn pub-type="epub">2713-167X</issn><publisher><publisher-name>НЕКОММЕРЧЕСКОЕ ПАРТНЕРСТВО «ОБЩЕСТВО ИНТЕРВЕНЦИОННЫХ ОНКОРАДИОЛОГОВ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37174/2587-7593-2026-9-3-49-59</article-id><article-id custom-type="elpub" pub-id-type="custom">ojrdrt-576</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>ЛУЧЕВАЯ ДИАГНОСТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DIAGNOSTIC RADIOLOGY</subject></subj-group></article-categories><title-group><article-title>Диагностическая значимость МРТ в оценке менингиом после стереотаксической радиохирургии: морфологические признаки и динамика изменений</article-title><trans-title-group xml:lang="en"><trans-title>Diagnostic Significance of MRI in the Assessment of Meningiomas after Stereotactic Radiosurgery: Morphological Features and Dynamics of Changes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-2336-7520</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мельникова</surname><given-names>М. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Melnikova</surname><given-names>M. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мельникова Марина Константиновна</p><p>+79111962202</p><p>197758, Санкт-Петербург. пос. Песочный, ул. Ленинградская, 70</p></bio><bio xml:lang="en"><p>Marina K. Melnikova</p><p>+79111962202</p><p>70, Leningradskaya Str., Pesochny, Saint Petersburg, 197758</p></bio><email xlink:type="simple">mk_melnikova@rrcrst.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/0009-0007-1229-1203</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Артемов</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Artemov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197758, Санкт-Петербург. пос. Песочный, ул. Ленинградская, 70</p></bio><bio xml:lang="en"><p>70, Leningradskaya Str., Pesochny, Saint Petersburg, 197758</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/0000-0002-0938-5213</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Виноградова</surname><given-names>Ю. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Vinogradova</surname><given-names>Y. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197758, Санкт-Петербург. пос. Песочный, ул. Ленинградская, 70</p></bio><bio xml:lang="en"><p>70, Leningradskaya Str., Pesochny, Saint Petersburg, 197758</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/0000-0002-6714-6413</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карташев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kartashev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>197758, Санкт-Петербург. пос. Песочный, ул. Ленинградская, 70</p></bio><bio xml:lang="en"><p>70, Leningradskaya Str., Pesochny, Saint Petersburg, 197758</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский научный центр радиологии и хирургическихтехнологий имени академика А.М. Гранова Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A.M. Granov Russian Research Center of Radiology and Surgical Technologies</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>05</day><month>10</month><year>2026</year></pub-date><volume>9</volume><issue>3</issue><fpage>49</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мельникова М.К., Артемов М.В., Виноградова Ю.Н., Карташев А.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Мельникова М.К., Артемов М.В., Виноградова Ю.Н., Карташев А.В.</copyright-holder><copyright-holder xml:lang="en">Melnikova M.K., Artemov M.V., Vinogradova Y.N., Kartashev A.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.oncoradjournal.ru/jour/article/view/576">https://www.oncoradjournal.ru/jour/article/view/576</self-uri><abstract><sec><title>Цель</title><p>Цель: Повысить эффективность диагностического наблюдения за пациентами с менингиомами после стереотаксической радиохирургии.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы: В ретроспективное одноцентровое исследование включены 50 пациентов с менингиомами, которым выполнена стереотаксическая радиохирургия (СРХ) на аппарате Gamma Knife ICON (Elekta). Средний возраст — 64,9 ± 11,6 года. Менингиомы основания черепа выявлены у 21 пациента из 50 (42,0 %), парасагиттальной локализации — у 18 из 50 (36,0 %), конвекситальные — у 11 из 50 (22,0 %). Гистологическая верификация (по результатам предшествующей резекции) была у 24 пациентов: Grade I — 10, Grade II — 8, Grade III — 6. Контрольные МРТ-исследования проводились через 3, 6 и 12–14 мес после СРХ. Для каждой опухоли определялись изменения площади (по критериям RANO) и объёма; согласие методов оценивалось коэффициентом каппа Коэна. Кроме того, оценивались качественные МРТ-признаки: характер контрастирования, перифокальный отёк, чёткость контуров, наличие новых очагов.</p></sec><sec><title>Результаты</title><p>Результаты: По объёмной классификации прогрессирование наблюдалось у 12 из 50 пациентов (24,0 %; 95 % ДИ: 14,3–37,4), стабилизация — у 32 из 50 (64,0 %), ответ — у 6 из 50 (12,0 %). По критериям RANO: 10 из 50 (20,0 %) / 21 из 50(42,0 %) / 19 из 50 (38,0 %) соответственно. Согласие двух методов составило 68,0 % (каппа Коэна 0,498). Степень злокачественности значимо ассоциировалась с прогрессированием (хи-квадрат p = 0,043; попарно Grade I vs III: p = 0,035); локализация — нет (p = 0,84). Высокую диагностическую эффективность показала комбинация качественных МРТ-признаков: стойкое сохранение гетерогенного контрастирования к 12–14 мес в сочетании с патологической динамикой перифокальных изменений. Каждый признак характеризовался различным соотношением чувствительности и специфичности: появление новых очагов — Sn 41,7 %, Sp 100 %; перифокальный отёк — Sn 41,7 %, Sp 92,1 %; появление нечётких контуров — Sn 25,0 %, Sp 100 %.</p></sec><sec><title>Заключение</title><p>Заключение: Количественная объемная оценка менингиом после СРХ оказалась более чувствительной по сравнению с оценкой по площади (RANO), дополнительно выявляя случаи скрытого прогрессирования у 2 пациентов (4 %). Степень злокачественности менингиомы является значимым фактором, ассоциированным с риском прогрессирования, достоверное различие установлено между Grade I и Grade III. Локализация образования не влияла на исходы проводимого лечения. Комплекс качественных МРТ-признаков (характер и динамика контрастирования, перифокальный отёк, чёткость контуров, новые очаги) обеспечивает основу для дифференциальной диагностики истинного прогрессирования и постлучевых реакций.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose</title><p>Purpose: To improve the efficiency of diagnostic monitoring of patients with meningiomas after stereotactic radiosurgery.</p></sec><sec><title>Materials and methods</title><p>Materials and methods: This retrospective, single-center study included 50 patients with meningiomas who underwent stereotactic radiosurgery (SRS) using the Gamma Knife ICON (Elekta). The mean age was 64.9 ± 11.6 years. Skull base meningiomas were detected in 21 of 50 patients (42.0 %), parasagittal meningiomas in 18 of 50 (36.0 %), and convexital meningiomas in 11 of 50 (22.0 %). Histological verification (based on the results of the previous resection) was performed in 24 patients: Grade I — 10, Grade II — 8, Grade III — 6. Follow-up MRI examinations were performed 3, 6, and 12–14 months after SRS. For each tumor, changes in area (using the RANO criteria) and volume were determined; agreement between the methods was assessed using the Cohen’s kappa coefficient. In addition, qualitative MRI features were assessed: contrast enhancement pattern, perifocal edema, margin clarity, and the presence of new lesions.</p></sec><sec><title>Results</title><p>Results: According to the volume classification, progression was observed in 12 of 50 patients (24.0 %; 95 % CI: 14.3–37.4), stabilization in 32 of 50 (64.0 %), and response in 6 of 50 (12.0 %). According to the RANO criteria: 10 of 50 (20.0 %) / 21 of 50 (42.0 %) / 19 of 50 (38.0 %), respectively. The agreement between the two methods was 68.0 % (Cohen’s kappa 0.498). The grade of malignancy was significantly associated with progression (chi-square p = 0.043; pairwise Grade I vs III: p = 0.035); localization was not (p = 0.84). A combination of qualitative MR features demonstrated high diagnostic efficacy: persistent heterogeneous contrast enhancement at 12-14 months, combined with pathological dynamics of perifocal changes. Each feature was characterized by a different sensitivityspecificity ratio: the appearance of new lesions — Sn 41.7 %, Sp 100 %; perifocal edema — Sn 41.7 %, Sp 92.1 %; the appearance of fuzzy margins — Sn 25.0 %, Sp 100 %.</p></sec><sec><title>Conclusion</title><p>Conclusion: Quantitative volumetric assessment of meningiomas after SRS proved more sensitive compared to area-based assessment (RANO), additionally identifying cases of occult progression in 2 patients (4 %). The grade of meningioma malignancy is a significant factor associated with the risk of progression; a significant difference was found between Grade I and Grade III. The location of the lesion did not affect treatment outcomes. A set of qualitative MRI features (characteristics and dynamics of contrast enhancement, perifocal edema, clarity of contours, new lesions) provides the basis for differential diagnosis of true progression and post-radiation reactions.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>менингиома</kwd><kwd>стереотаксическая радиохирургия</kwd><kwd>магнитно-резонансная томография</kwd><kwd>критерии RANO</kwd><kwd>объёмная оценка</kwd><kwd>прогрессирование опухоли</kwd><kwd>псевдопрогрессия</kwd><kwd>перифокальный отёк</kwd></kwd-group><kwd-group xml:lang="en"><kwd>meningioma</kwd><kwd>stereotactic radiosurgery</kwd><kwd>magnetic resonance imaging</kwd><kwd>RANO criteria</kwd><kwd>volumetric assessment</kwd><kwd>tumor progression</kwd><kwd>pseudoprogression</kwd><kwd>perifocal edema</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено без спонсорской поддержки.</funding-statement><funding-statement xml:lang="en">The study had no sponsorship.</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">Louis DN, Perry A, Wesseling P, et al. 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