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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">medvis</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская визуализация</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Visualization</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1607-0763</issn><issn pub-type="epub">2408-9516</issn><publisher><publisher-name>RDS-Media Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24835/1607-0763-1507</article-id><article-id custom-type="elpub" pub-id-type="custom">medvis-1507</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>ПОЧКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>KIDNEYS</subject></subj-group></article-categories><title-group><article-title>Возможность определения процентного отношения вклада почек в экскреторную функцию. Предварительные результаты</article-title><trans-title-group xml:lang="en"><trans-title>The ability to determine the percentage of kidney contribution to excretory function. Preliminary results</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9014-9022</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Громов</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gromov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Громов Александр Игоревич – доктор мед. наук, профессор, руководитель группы лучевых методов диагностики и лечения отдела онкоурологии НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиала ФГБУ “НМИЦ радиологии” Минздрава России; профессор кафедры лучевой диагностики ФГБОУ ВО “Российский университет медицины” Минздрава России; Москва. https://orcid.org/0000-0002-9014-9022</p></bio><bio xml:lang="en"><p>Alexander I. Gromov – Doct. of Sci. (Med.), Professor, Head of the radiation diagnosis and treatment methods, Oncourology Department, N.A. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation; Professor of Russian University of Medicine of the Ministry of Healthcare of the Russian Federation; Moscow.https://orcid.org/0000-0002-9014-9022</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/0009-0001-7686-1718</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Доморовская</surname><given-names>Я. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Domorovskaya</surname><given-names>Ya. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доморовская Яна Сергеевна – врач-рентгенолог НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиала ФГБУ “НМИЦ радиологии” Минздрава России, Москва. <ext-link xlink:href="https://orcid.org/0009-0001-7686-1718" ext-link-type="uri">https://orcid.org/0009-0001-7686-1718</ext-link></p></bio><bio xml:lang="en"><p>Yana S. Domorovskaya – radiologist at the N.A. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation, Moscow.https://orcid.org/0009-0001-7686-1718 </p></bio><email xlink:type="simple">yana.domorovskaya@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8852-6485</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сивков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sivkov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сивков Андрей Владимирович – канд. мед. наук, заместитель директора по науке НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиала ФГБУ “НМИЦ радиологии” Минздрава России, Москва. <ext-link xlink:href="https://orcid.org/0000-0001-8852-6485" ext-link-type="uri">https://orcid.org/0000-0001-8852-6485</ext-link></p></bio><bio xml:lang="en"><p>Andrey V. Sivkov – Cand. of Sci. (Med.), Deputy Director for Science of the N.A. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation, Moscow.https://orcid.org/0000-0001-8852-6485 </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/0000-0003-3635-5244</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Просянников</surname><given-names>М. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Prosyannikov</surname><given-names>M. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Просянников Михаил Юрьевич – канд. мед. наук, заведующий отделом мочекаменной болезни НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиала ФГБУ “НМИЦ радиологии” Минздрава России, Москва.  https://orcid.org/0000-0003-3635-5244</p></bio><bio xml:lang="en"><p>Mikhail Yu. Prosyannikov – Cand. of Sci. (Med.), Head of the Department of Urolithiasis at the N.A. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation, Moscow.https://orcid.org/0000-0003-3635-5244</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/0000-0003-1292-1651</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Войтко</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Voitko</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Войтко Дмитрий Алексеевич – канд. мед. наук, научный сотрудник отдела мочекаменной болезни НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиала ФГБУ “НМИЦ радиологии” Минздрава России, Москва.https://orcid.org/0000-0003-1292-1651</p></bio><bio xml:lang="en"><p>Dmitry A. Voitko – Cand. of Sci. (Med.), Researcher at the Department of Urolithiasis of the N.A. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation, Moscow.https://orcid.org/0000-0003-1292-1651</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/0000-0001-8784-8415</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каприн</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaprin</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Каприн Андрей Дмитриевич – академик РАН, доктор мед. наук, профессор, генеральный директор ФГБУ “НМИЦ радиологии” Минздрава России; заведующий кафедрой урологии и оперативной нефрологии с курсом онкоурологии медицинского факультета медицинского института ФГАОУ ВО “Российский университет дружбы народов имени Патриса Лумумбы” Минобрнауки России, Москва.<ext-link xlink:href="https://orcid.org/0000-0001-8784-8415" ext-link-type="uri">https://orcid.org/0000-0001-8784-8415</ext-link></p></bio><bio xml:lang="en"><p>Andrey D. Kaprin – Full Member of the Russian Academy of Sciences, Doct. of Sci. (Med.), Professor, Director of National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation; Head of Department of urology and surgical nephrology with a course of oncourology at the medical faculty of medical institute of the Peoples' Friendship University of Russia named after Patrice Lumumba, Moscow.https://orcid.org/0000-0001-8784-8415</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3398-4128</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алексеев</surname><given-names>Б. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekseev</surname><given-names>B. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексеев Борис Яковлевич – доктор мед. наук, профессор, заместитель генерального директора по научной работе ФГБУ “НМИЦ радиологии” Минздрава России, Москва.https://orcid.org/0000-0002-3398-4128</p></bio><bio xml:lang="en"><p>Boris Ya. Alekseev – Doct. of Sci. (Med.), Professor, Deputy Director General for Scientific Work of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation, Moscow. https://orcid.org/0000-0002-3398-4128</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0206-043X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Аполихин</surname><given-names>О. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Apolikhin</surname><given-names>O. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аполихин Олег Иванович – член-корр. РАН, доктор мед. наук, профессор, директор НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиала ФГБУ “НМИЦ радиологии” Минздрава России, Москва. https://orcid.org/0000-0003-0206-043X</p></bio><bio xml:lang="en"><p>Oleg I. Apolikhin – Corresponding Member of the Russian Academy of Sciences, Doct. of Sci. (Med.), Professor, Director of the N.A. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation, Moscow.https://orcid.org/0000-0003-0206-043X</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиал ФГБУ “НМИЦ радиологии” Минздрава России; ФГБОУ ВО “Российский университет медицины” Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation; Russian University of Medicine of the Ministry of Healthcare of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>НИИ урологии и интервенционной радиологии им. Н.А. Лопаткина – филиал ФГБУ “НМИЦ радиологии” Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N. Lopatkin Scientific Research Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiologiсal Center of the Ministry of Health of Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБУ “Национальный медицинский исследовательский центр радиологии” Минздрава России; ФГАОУ ВО “Российский университет дружбы народов имени Патриса Лумумбы” Минобрнауки России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Radiological Centre of the Ministry of Healthcare of the Russian Federation; Peoples' Friendship University of Russia named after Patrice Lumumba</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>ФГБУ “Национальный медицинский исследовательский центр радиологии” Минздрава России; ФГБОУ ВО “Российский биотехнологический университет (РОСБИОТЕХ)”</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Medical Research Radiological Centre of the Ministry of Healthcare of the Russian Federation; Russian Biotechnological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2025</year></pub-date><volume>29</volume><issue>1</issue><fpage>71</fpage><lpage>79</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Громов А.И., Доморовская Я.С., Сивков А.В., Просянников М.Ю., Войтко Д.А., Каприн А.Д., Алексеев Б.Я., Аполихин О.И., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Громов А.И., Доморовская Я.С., Сивков А.В., Просянников М.Ю., Войтко Д.А., Каприн А.Д., Алексеев Б.Я., Аполихин О.И.</copyright-holder><copyright-holder xml:lang="en">Gromov A.I., Domorovskaya Y.S., Sivkov A.V., Prosyannikov M.Y., Voitko D.A., Kaprin A.D., Alekseev B.Y., Apolikhin O.I.</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://medvis.rdsmedia.ru/jour/article/view/1507">https://medvis.rdsmedia.ru/jour/article/view/1507</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования: определение возможности использования сегментации почек с получением данных об их объеме и плотностных характеристиках для оценки раздельной функции.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Проанализированы данные 31 пациента, которым была выполнена нефросцинтиграфия и КТ-исследование почек с контрастированием. На рабочей станции с помощью программы Vitrea Advanced Visualization проведена сегментация обеих почек в нефрографическую фазу контрастирования. Полученные значения объема и коэффициента затухания рентгеновского излучения в единицах Хаунсфилда (ед.HU) для каждой почки перемножали, получая “массу” контрастного препарата. Поделив полученное значение каждой почки на их сумму и умножив на 100%, получали раздельный вклад каждой из почек в их общую экскреторную функцию в процентах. Для проверки необходимости введения в расчеты плотности паренхимы в нативную фазу исследования была измерена плотность паренхимы обеих почек на трех уровнях в нативную фазу, рассчитанное среднее арифметическое вычтено из средней плотности паренхимы почки в нефрографическую фазу. В дальнейшем производились те же расчеты для получения процентного вклада почек, что и до вычета нативной плотности. Нефросцинтиграфия выполнялась в различных лечебных учреждениях. Исследования проводились с соединениями технеция (99mTc). Для дальнейшего анализа брались данные о процентном вкладе почек в их общую экскреторную функцию.</p></sec><sec><title>Результаты</title><p>Результаты. Полученные данные о процентном вкладе почек в их общую экскреторную функцию, полученные при нефросцинтиграфии, сопоставлялись с расчетными данными КТ. Проведенный анализ показал очень высокую корреляцию и ковариацию этих результатов (коэффициент корреляции равен 0,99 (p &lt; 0,001), коэффициент ковариации равен 0,95 (p &lt; 0,001)). При проведении корреляционного анализа результатов нефросцинтиграфии с данными КТ, где дополнительно вводилась поправка на нативную плотность паренхимы (она вычиталась из средней плотности паренхимы в нефрографическую фазу), результаты остались прежними: коэффициент корреляции составил 0,99 (p &lt; 0,001); коэффициент ковариации равен 0,95 (p &lt; 0,001).</p></sec><sec><title>Выводы</title><p>Выводы. Разработан доступный и удобный в практической работе метод оценки раздельной функции почек. Метод не требует выполнения четко регламентированного временного протокола многофазной КТ. Оценке могут быть подвергнуты данные КТ, выполненной в любом лечебном учреждении. Метод не требует дополнительной оценки нативных денситометрических характеристик почек. Результаты, полученные при использовании метода, показали очень высокую корреляцию с данными динамической нефросцинтиграфии.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose</title><p>Purpose. Determination of the possibility of using kidney segmentation to obtain data on their volume and density characteristics to assess the split renal function.</p></sec><sec><title>Material and methods</title><p>Material and methods. The data of 31 patients who underwent nephroscintigraphy and CT examination of the kidneys with contrast were analyzed. Segmentation of both kidneys into the nephrographic phase of contrast was performed at the workstation using the Vitrea Advanced Visualization program. The obtained values of the volume were multiplied at the attenuation coefficient of X-ray radiation in Hounsfield units (HU) for each kidney to obtain the "mass" of the contrast preparation. Having divided the obtained value of each kidney by their sum value and multiplying by 100%, we obtained a split contribution of each kidney to their total excretory function in percentages. To verify the need to introduce parenchymal density into calculations in the native phase of the study, the density of the parenchyma of both kidneys was measured at three levels in the native phase, then, the calculated arithmetic mean was subtracted from the average density of the renal parenchyma in the nephrographic phase. Subsequently, the same calculations were performed to obtain the percentage contribution of the kidneys as before deducting the native density. Nephroscintigraphy was performed in various medical institutions. Studies were conducted with technetium compounds (99mTc). For further analysis, data on the percentage contribution of each kidney to their overall excretory function were taken.</p></sec><sec><title>Results</title><p>Results. The obtained data on the percentage contribution of the kidneys to their total excretory function obtained by nephroscintigraphy were compared with the calculated CT data. The analysis showed a very high correlation and covariance of these results (the correlation coefficient is 0.99 (p &lt; 0.001), the covariance coefficient is 0.95 (p &lt; 0.001)). When conducting a correlation analysis of the results of nephroscintigraphy with CT data, where an additional correction was made for the native density of parenchyma (it was subtracted from the average density of parenchyma in the nephrographic phase), the results remained the same: the correlation coefficient was 0.99 (p &lt; 0.001); the covariance coefficient was 0.95 (p &lt; 0.001).</p></sec><sec><title>Conclusions</title><p>Conclusions. An accessible and practical method for evaluating split renal function has been developed. The method does not require the implementation of a clearly regulated time protocol for multiphase CT. CT data performed in any medical institution can be evaluated. The method does not require additional assessment of the native densitometric characteristics of the kidneys. The results obtained using the method showed a very high correlation with the data of dynamic nephroscintigraphy.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>компьютерная томография</kwd><kwd>динамическая нефросцинтиграфия</kwd><kwd>функция почки</kwd><kwd>раздельная функция почек</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computed tomography</kwd><kwd>dynamic nephroscintigraphy</kwd><kwd>renal function</kwd><kwd>split renal function</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">Levey A.S., Stevens L.A., Schmid C.H. et al.; CKD-EPI (Chronic Kidney Disease Epidemiology Collaboration). A new equation to estimate glomerular filtration rate. Ann. Intern. Med. 2009; 150 (9): 604–612. https://doi.org/10.7326/0003-4819-150-9-200905050-00006. Erratum in: Ann Intern Med. 2011; 155 (6): 408. 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