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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">pribor</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Приборостроение</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of Instrument Engineering</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3454</issn><issn pub-type="epub">2500-0381</issn><publisher><publisher-name>Национальный исследовательский университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/0021-3454-2024-67-9-798-812</article-id><article-id custom-type="elpub" pub-id-type="custom">pribor-80</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>ПРИБОРЫ, СИСТЕМЫ И ИЗДЕЛИЯ МЕДИЦИНСКОГО НАЗНАЧЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DEVICES, SYSTEMS AND MEDICAL DEVICES</subject></subj-group></article-categories><title-group><article-title>Распределение рентгеноконтрастного вещества в просвете и стенке брюшной аорты по данным КТ-ангиографического исследования</article-title><trans-title-group xml:lang="en"><trans-title>Contrast Agent Distribution in the Lumen and Wall of the Abdominal Aorta According to CT-Angiographic Study Data</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коденко</surname><given-names>М. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Kodenko</surname><given-names>M. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мария Романовна Коденко, аспирант, мл. научный сотрудник</p><p>кафедра биомедицинских технических систем; отдел научных медицинских исследований</p><p>Москва</p></bio><bio xml:lang="en"><p>Maria R. Kodenko, Post-Graduate Student, Junior Researcher</p><p>Department for Biomedical Technical Systems; Department of Medical Research</p><p>Moscow</p></bio><email xlink:type="simple">m.r.kodenko@yandex.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>Васильев</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasiliev</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Александрович Васильев, канд. мед. наук, директор Центра</p><p>Москва</p></bio><bio xml:lang="en"><p>Yuriy A. Vasiliev, PhD, CEO of the Center</p><p>Moscow</p></bio><email xlink:type="simple">npcmr@zdrav.mos.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кульберг</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulberg</surname><given-names>N. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Сергеевич Кульберг, канд. физ.-мат. наук, ст. научный сотрудник</p><p>кафедра медико-технических информационных технологий</p><p>Москва</p></bio><bio xml:lang="en"><p>Nicholay S. Kulberg, PhD, Senior Researcher</p><p>Department of Medical and Technical Information Technologies</p><p>Moscow</p></bio><email xlink:type="simple">kulberg@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Самородов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Samorodov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Владимирович Самородов, канд. техн. наук, доцент, заведующий кафедрой</p><p>кафедра биомедицинских технических систем</p><p>Москва</p></bio><bio xml:lang="en"><p>Andrey V. Samorodov, PhD, Associate Professor,  Head of the Department</p><p>Department of Biomedical Technical Systems</p><p>Moscow</p></bio><email xlink:type="simple">avs@bmstu.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Решетников</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Reshetnikov</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роман Владимирович Решетников, канд. физ.-мат. наук, руководительотдела</p><p>отдел научных медицинских исследований</p><p>Москва</p></bio><bio xml:lang="en"><p>Roman V. Reshetnikov, PhD, Head of the Department</p><p>Department of Medical Research</p><p>Moscow</p></bio><email xlink:type="simple">reshetnikov@fbb.msu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Научно-практический клинический центр диагностики и телемедицинских технологий Департамента здравоохранения города Москвы; Московский государственный технический университет им. Н. Э. Баумана<country>Россия</country></aff><aff xml:lang="en">Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies, Department of Health Care of Moscow; Bauman Moscow State Technical University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Научно-практический клинический центр диагностики и телемедицинских технологий Департамента здравоохранения города Москвы<country>Россия</country></aff><aff xml:lang="en">Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies, Department of Health Care of Moscow<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Московский государственный технический университет им. Н. Э. Баумана<country>Россия</country></aff><aff xml:lang="en">Bauman Moscow State Technical University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>26</day><month>11</month><year>2024</year></pub-date><volume>67</volume><issue>9</issue><fpage>798</fpage><lpage>812</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Национальный исследовательский университет ИТМО, 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Национальный исследовательский университет ИТМО</copyright-holder><copyright-holder xml:lang="en">Национальный исследовательский университет ИТМО</copyright-holder><license xlink:href="https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://pribor.ifmo.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://pribor.ifmo.ru/jour/article/view/80">https://pribor.ifmo.ru/jour/article/view/80</self-uri><abstract><p>   Представлен подход к аппроксимации и анализу компонента сигнала КТ-плотности, ассоциированного с внутрисосудистым рентгеноконтрастным веществом (РКВ) по данным компьютерно-томографических ангиографических (КТА) изображений брюшного отдела аорты.</p><p>   Цель работы — исследование возможности извлечения и анализа РКВ-индуцированного компонента в просвете и стенке брюшного отдела аорты на КТА-изображении.</p><p>   Предложен функционал для описания одномерного и двумерного распределения РКВ в виде набора сумм сигмоидов специального вида. Для аппроксимации использован метод нелинейных наименьших квадратов с оптимизацией Левенберга — Марквардта. Тестирование алгоритма проведено на открытом наборе данных, состоящем из 594 КТА-изображений. Подготовка данных проведена с помощью специализированного программного обеспечения Slicer 3D. Результаты демонстрируют отсутствие статистически значимых различий значений КТ-плотности между исходными изображениями и результатами аппроксимации (p &gt; 0,05, парный тест Вилкоксона). Продемонстрирована чувствительность модели к различному распределению РКВ в области аневризмы, тромбоза и отхождения магистральных артерий. Чувствительность определена как наличие статистически значимых различий расчетных параметров модели для области однородного и неоднородного распределения РКВ в рамках каждого из КТ-исследований. Значения среднеквадратической ошибки аппроксимации для указанных областей статистически значимо не отличаются и унимодально распределены (p &gt; 0,7) в рамках отдельно взятого КТ-исследования. Предложенный подход может быть полезен для персонализации КТА, развития алгоритмов обработки КТА-данных, синтеза бесконтрастных КТ-данных, обучения алгоритмов искусственного интеллекта.</p></abstract><trans-abstract xml:lang="en"><p>   An approach to the approximation and analysis of the CT density signal component associated with intravascular radiocontrast agent (RCA) based on computed tomography angiography (CTA) images of the abdominal aorta is presented.</p><p>   The aim of the work is to study the possibility of extracting and analyzing the RCA-induced component in the lumen and wall of the abdominal aorta on the CTA image.</p><p>   A functionality for describing one-dimensional and two-dimensional distribution of the CTA as a set of sums of sigmoid of a special type is proposed. The nonlinear least squares method with Levenberg – Marquardt optimization is used for approximation. The algorithm is tested on an open data set consisting of 594 CTA images. Data preparation is performed using specialized software Slicer 3D. The results demonstrate the absence of statistically significant differences in the CTA density values between the original images and the approximation results (p&gt; 0.05, paired Wilcoxon test). The sensitivity of the model to different distributions of the RCA in the area of aneurysm, thrombosis and origin of the main arteries is demonstrated. Sensitivity is defined as the presence of statistically significant differences in the calculated parameters of the model for the area of homogeneous and non-homogeneous distribution of the RCA within each of the CT studies. The values of the root-mean-square approximation error for the specified areas do not differ statistically significantly and are unimodally distributed (p &gt; 0.7) within a single CT study. The proposed approach can be useful for personalizing CTA, developing algorithms for processing CTA data, synthesizing non-contrast CT data, and training artificial intelligence algorithms.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>компьютерная томография</kwd><kwd>ангиография</kwd><kwd>обработка изображений</kwd><kwd>контрастное вещество</kwd><kwd>моделирование</kwd><kwd>КТ-плотность</kwd><kwd>искусственный интеллект</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computed tomography</kwd><kwd>angiography</kwd><kwd>image processing</kwd><kwd>contrast agent</kwd><kwd>modeling</kwd><kwd>X-ray density</kwd><kwd>artificial intelligence</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена в рамках НИОКР (№ ЕГИСУ: 123031500002-1) в соответствии с Приказом от 21. 12. 2022 г. № 1196 „Об утверждении государственных заданий, финансовое обеспечение которых осуществляется за счет средств бюджета города Москвы, государственным бюджетным (автономным) учреждениям, подведомственным Департаменту здравоохранения города Москвы, на 2023 год и плановый период 2024 и 2025 годов“</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>This paper was prepared by a group of authors as a part of the research and development effort titled “Development of software for automated generation of data sets containing synthetic native-phase CT studies to train and validate AI algorithms” (USIS No. 123031500002-1)</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">Erbel R., Aboyans V., Boileau C., Bossone E. et al. 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