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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">Aspirantskiy Vestnik Povolzhiya</journal-id><journal-title-group><journal-title xml:lang="en">Aspirantskiy Vestnik Povolzhiya</journal-title><trans-title-group xml:lang="ru"><trans-title>Аспирантский вестник Поволжья</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2072-2354</issn><issn publication-format="electronic">2410-3764</issn><publisher><publisher-name xml:lang="en">Samara State Medical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">702330</article-id><article-id pub-id-type="doi">10.35693/AVP702330</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>UROLOGY AND ANDROLOGY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>УРОЛОГИЯ И АНДРОЛОГИЯ</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">Integrative approach to PET/CT diagnosis of acute and chronic pyelonephritis using different radiopharmaceuticals (<sup>18</sup>F-FDG and <sup>11</sup>C-choline)</article-title><trans-title-group xml:lang="ru"><trans-title>Интегративный подход к ПЭТ/КТ-диагностике острого и хронического пиелонефрита c применением различных радиофармпрепаратов (<sup>18</sup>F-ФДГ и <sup>11</sup>С-холина)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-1333-2922</contrib-id><name-alternatives><name xml:lang="en"><surname>Zubik</surname><given-names>Grigorii V.</given-names></name><name xml:lang="ru"><surname>Зубик</surname><given-names>Григорий Васильевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, research intern of the Institute of Clinical Medicine</p></bio><bio xml:lang="ru"><p>стажер-исследователь института клинической медицины</p></bio><email>grisha.zubik@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9414-8510</contrib-id><name-alternatives><name xml:lang="en"><surname>Berdichevsky</surname><given-names>Boris A.</given-names></name><name xml:lang="ru"><surname>Бердичевский</surname><given-names>Борис Аркадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Professor of the Department of Pediatric Surgery with a Course in Urology and Andrology</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, профессор кафедры детской хирургии с курсом урологии и андрологии</p></bio><email>doktor_bba@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4753-6630</contrib-id><name-alternatives><name xml:lang="en"><surname>Vasilkova</surname><given-names>Tatyana N.</given-names></name><name xml:lang="ru"><surname>Василькова</surname><given-names>Татьяна Николаевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor, Head of the Department of Faculty Therapy</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор, заведующая кафедрой факультетской терапии</p></bio><email>vasilkova@tyumsmu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1619-4714</contrib-id><name-alternatives><name xml:lang="en"><surname>Gonyaev</surname><given-names>Artem R.</given-names></name><name xml:lang="ru"><surname>Гоняев</surname><given-names>Артем Романович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine), Head of the Operative Urology Department</p></bio><bio xml:lang="ru"><p>канд. мед. наук, заведующий отделением оперативной урологии</p></bio><email>a.gonyaev25@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8623-4769</contrib-id><name-alternatives><name xml:lang="en"><surname>Uchaev</surname><given-names>Daniil A.</given-names></name><name xml:lang="ru"><surname>Учаев</surname><given-names>Даниил Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>researcher</p></bio><bio xml:lang="ru"><p>научный сотрудник отдела электронной микроскопии</p></bio><email>uchaevda@susu.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6020-2489</contrib-id><name-alternatives><name xml:lang="en"><surname>Korabelnikov</surname><given-names>Mikhail A.</given-names></name><name xml:lang="ru"><surname>Корабельников</surname><given-names>Михаил Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Radiologist of the Radiology Center</p></bio><bio xml:lang="ru"><p>врач-радиолог радиологического центра</p></bio><email>kma_doc@mail.ru</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-3050-2324</contrib-id><name-alternatives><name xml:lang="en"><surname>Arslanov</surname><given-names>Aidar F.</given-names></name><name xml:lang="ru"><surname>Арсланов</surname><given-names>Айдар Фидратович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>postgraduate student of the Department of Histology and Cell Biology</p></bio><bio xml:lang="ru"><p>аспирант кафедры гистологии и клеточной биологии</p></bio><email>aidar_arslanov@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tyumen State Medical University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Тюменский государственный медицинский университет» Минздрава России</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Clinical Hospital “Mother and Child”, Tyumen</institution></aff><aff><institution xml:lang="ru">Клинический госпиталь «Мать и дитя», Тюмень</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">SUSU National Research University</institution></aff><aff><institution xml:lang="ru">ФГАОУ ВО «ЮУрГУ Национальный исследовательский университет»</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">”Medical City” Multidisciplinary Clinical Medical Center</institution></aff><aff><institution xml:lang="ru">ГАУЗ ТО МКМЦ «Медицинский город»</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2026-08-10" publication-format="electronic"><day>10</day><month>08</month><year>2026</year></pub-date><pub-date date-type="pub" iso-8601-date="2026-09-13" publication-format="electronic"><day>13</day><month>09</month><year>2026</year></pub-date><volume>26</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>73</fpage><lpage>78</lpage><history><date date-type="received" iso-8601-date="2026-02-08"><day>08</day><month>02</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-03-14"><day>14</day><month>03</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Zubik G.V., Berdichevsky B.A., Vasilkova T.N., Gonyaev A.R., Uchaev D.A., Korabelnikov M.A., Arslanov A.F.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Зубик Г.В., Бердичевский Б.А., Василькова Т.Н., Гоняев А.Р., Учаев Д.А., Корабельников М.А., Арсланов А.Ф.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Zubik G.V., Berdichevsky B.A., Vasilkova T.N., Gonyaev A.R., Uchaev D.A., Korabelnikov M.A., Arslanov A.F.</copyright-holder><copyright-holder xml:lang="ru">Зубик Г.В., Бердичевский Б.А., Василькова Т.Н., Гоняев А.Р., Учаев Д.А., Корабельников М.А., Арсланов А.Ф.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://aspvestnik.ru/2410-3764/article/view/702330">https://aspvestnik.ru/2410-3764/article/view/702330</self-uri><abstract xml:lang="en"><p>The article presents a comprehensive examination of 4 patients with different forms of pyelonephritis (acute and chronic) performed at the urological clinic of Tyumen State Medical University, Ministry of Health of Russia. PET/CT and calculation of the maximum standardized uptake value (SUVmax) were performed according to standard protocols using a Siemens Biograph scanner and different radiopharmaceuticals: ¹⁸F-FDG and ¹¹C-choline. Transmission electron microscopy (TEM) of renal parenchyma at 10,000x magnification was performed using a JEM-2200FS CS microscope (Japan). Based on the results of PET/CT and digital SUVmax calculations in the renal parenchyma of patients with various manifestations of pyelonephritis, a reconstruction of the probable 3D anatomical state of the renal parenchyma and the 3D ultrastructural state of the main nephron elements was performed, integrated into a single block at 10,000x magnification.</p> <p>The study revealed specific features of PET/CT-based molecular-cellular metabolism of ¹⁸F-FDG and ¹¹C-choline in the kidneys during acute and chronic pyelonephritis. The possibility of navigating the probable 3D anatomical and 3D ultrastructural state of the renal parenchyma based on the standardized uptake value of radiopharmaceuticals was demonstrated. Integration of digital PET/CT data with the assessment of the kidney ultrastructural state may improve the effectiveness of diagnosing and monitoring inflammatory kidney diseases.</p> <p>Digital PET/CT navigation of the probable 3D anatomical state of the renal parenchyma and the 3D ultrastructure of the main nephron elements, integrated into a single block at 10,000x magnification based on the standardized uptake value of different radiopharmaceuticals, can be used as an additional integrative tool for the non-invasive diagnosis of clinical manifestations of pyelonephritis.</p></abstract><trans-abstract xml:lang="ru"><p>В статье представлены 4 клинических наблюдения пациентов с различными формами пиелонефрита (острый и хронический). Обследование пациентов выполнено на базе урологической клиники Тюменского ГМУ Минздрава России. ПЭТ/КТ и расчет стандартизированного уровня захвата радиофармпрепарата (SUVmax) выполнялись по стандартной методике на аппарате Siemens Biograph с использованием различных радиофармпрепаратов: <sup>18</sup>F-ФДГ и <sup>11</sup>С-холина. ТЭМ почечной паренхимы с увеличением в 10000 раз выполнялась на аппарате JEM-2200FS CS (Япония). По результатам ПЭТ/КТ цифрового расчета стандартизированного уровня захвата (SUVmax) в почечной паренхиме у пациентов с различными проявлениями пиелонефрита проводилась реконструкция вероятного 3D-анатомического состояния почечной паренхимы и 3D-ультраструктурного состояния основных элементов нефрона в едином блоке с увеличением в 10000 раз.</p> <p>Выявлены особенности ПЭТ/КТ молекулярно-клеточного метаболизма <sup>18</sup>F-ФДГ и <sup>11</sup>С-холина в почках при остром и хроническом пиелонефрите. Показана возможность навигации вероятного 3D-анатомического и 3D-ультраструктурного состояния почечной паренхимы по показателю стандартизированного уровня захвата радиофармпрепаратов. Интеграция цифровых данных ПЭТ/КТ с оценкой ультраструктурного состояния почек может повысить эффективность диагностики и мониторинга воспалительных заболеваний почек.</p> <p>Цифровая ПЭТ/КТ навигация вероятного 3D-анатомического состояния почечной паренхимы и 3D-ультраструктуры основных элементов нефрона в едином блоке с увеличением в 10000 раз по показателю стандартизированного уровня захвата различных радиофармпрепаратов может быть использована в качестве дополнительного интегративного инструмента неинвазивной диагностики клинических проявлений пиелонефрита.</p></trans-abstract><kwd-group xml:lang="en"><kwd>integrative approach</kwd><kwd>pyelonephritis</kwd><kwd>PET/CT</kwd><kwd>¹⁸F-FDG</kwd><kwd>¹¹C-choline</kwd><kwd>ultrastructure</kwd><kwd>transmission electron microscopy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>интегративный подход</kwd><kwd>пиелонефрит</kwd><kwd>ПЭТ/КТ</kwd><kwd>18F-ФДГ</kwd><kwd>11С-холин</kwd><kwd>ультраструктура</kwd><kwd>трансмиссионная электронная микроскопия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Johnson JR, Russo TA. 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