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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">ntv</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический вестник информационных технологий, механики и оптики</journal-title><trans-title-group xml:lang="en"><trans-title>Scientific and Technical Journal of Information Technologies, Mechanics and Optics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-1494</issn><issn pub-type="epub">2500-0373</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2226-1494-2024-24-1-124-132</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-108</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>ИСКУССТВЕННЫЙ ИНТЕЛЛЕКТ И КОГНИТИВНЫЕ ИНФОРМАЦИОННЫЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ARTIFICIAL INTELLIGENCE AND COGNITIVE INFORMATION TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Сегментация мышечной ткани на снимках компьютерной томографии  на уровне позвонка L3</article-title><trans-title-group xml:lang="en"><trans-title>Segmentation of muscle tissue in computed tomography images at the level  of the L3 vertebra</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8612-3850</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Теплякова</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Teplyakova</surname><given-names>A. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Теплякова Анастасия Романовна — преподаватель, аспирант</p><p> Обнинск, 249039</p><p> sc 57220985322</p></bio><bio xml:lang="en"><p>Anastasia R. Teplyakova — PhD Student, Lecturer</p><p> Obninsk, 249039</p><p>sc 57220985322</p></bio><email xlink:type="simple">anastasija-t23@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/0009-0000-2324-5893</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шершнев</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shershnev</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шершнев Роман Владимирович — старший преподаватель</p><p>Обнинск, 249039</p></bio><bio xml:lang="en"><p>Roman V. Shershnev — Senior Lecturer</p><p> Obninsk, 249039</p></bio><email xlink:type="simple">rvshershnev@yandex.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/0000-0002-0420-7856</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Старков</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Starkov</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Старков Сергей Олегович — доктор физико-математических наук, профессор, старший научный сотрудник</p><p> Обнинск, 249039</p><p> sc 6701907645</p></bio><bio xml:lang="en"><p>Sergey O. Starkov — D.Sc. (Physics &amp; Mathematics), Professor, Senior Researcher</p><p>Obninsk, 249039</p><p>sc 6701907645</p></bio><email xlink:type="simple">sergeystarkov56@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/0000-0002-9971-3451</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Агабабян</surname><given-names>Т. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Агабабян Татев Артаковна — кандидат медицинских наук, заведующая отделением</p><p> Обнинск, 249036</p><p>sc 57202285176</p><p> </p></bio><email xlink:type="simple">tatevik.05@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-4872-3182</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кукарская</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kukarskaya</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кукарская Валерия Андреевна — клинический ординатор</p><p> Обнинск, 249036</p></bio><bio xml:lang="en"><p>Valeria A. Kukarskaya — Clinical Resident</p><p>Obninsk, 249036</p></bio><email xlink:type="simple">kukarely@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Обнинский институт атомной энергетики — филиал федерального государственного автономного образовательного учреждения высшего &#13;
образования «Национальный исследовательский ядерный университет «МИФИ» (ИАТЭ НИЯУ МИФИ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Obninsk Institute for Nuclear Power Engineering</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Обнинский институт атомной энергетики — филиал федерального государственного автономного образовательного учреждения высшего образования «Национальный исследовательский ядерный университет «МИФИ» (ИАТЭ НИЯУ МИФИ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Obninsk Institute for Nuclear Power Engineering</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Медицинский радиологический научный центр им. А.Ф. Цыба — филиал ФГБУ «Национальный медицинский &#13;
исследовательский центр радиологии» Минздрава России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A. Tsyb Medical Radiological Research Centre — branch of the National Medical Research Radiological Center of the Ministry of Health of the Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>12</month><year>2024</year></pub-date><volume>24</volume><issue>1</issue><fpage>124</fpage><lpage>132</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Теплякова А.Р., Шершнев Р.В., Старков С.О., Агабабян Т.А., Кукарская В.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Теплякова А.Р., Шершнев Р.В., Старков С.О., Агабабян Т.А., Кукарская В.А.</copyright-holder><copyright-holder xml:lang="en">Teplyakova A.R., Shershnev R.V., Starkov S.O., Агабабян Т.А., Kukarskaya V.A.</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://ntv.elpub.ru/jour/article/view/108">https://ntv.elpub.ru/jour/article/view/108</self-uri><abstract><p>Введение. С возрастающей рутинной нагрузкой на врачей-рентгенологов, связанной с необходимостью анализировать большое количество снимков, возникает потребность в автоматизации части процесса анализа. Саркопения представляет собой состояние, при котором происходит потеря мышечной массы. Для диагностики саркопении наиболее часто применяется компьютерная томография, по снимкам которой может быть оценен объем мышечной ткани. Первым этапом анализа является ее оконтуривание, которое выполняется вручную, занимает продолжительное время и не всегда производится достаточно качественно, что оказывает влияние на точность оценок и, как следствие, на план лечения пациента. Предметом исследования является применение подходов компьютерного зрения для точной сегментации мышечной ткани по снимкам компьютерной томографии с целью саркометрии. Цель исследования — разработка подхода к решению задачи сегментации собранных и размеченных снимков. Метод. Представленный подход включает в себя этапы предварительной обработки снимков, сегментации при помощи нейронных сетей семейства U-Net и постобработки. Всего рассмотрено 63 различных конфигурации подхода, которые отличаются с точки зрения данных, подаваемых на вход моделей, и архитектур моделей. Оценено влияние предложенного способа постобработки получаемых бинарных масок на точность сегментации. Основные результаты. Для конфигурации подхода, включающей предварительную обработку с маскированием стола томографа и применением анизотропной диффузионной фильтрации, сегментацию моделью, имеющей архитектуру Inception U-Net и постобработку на базе анализа контуров, получен коэффициент схожести Дайса (Dice similarity coefficient, DSC) 0,9379 и пересечение над объединением (Intersection over Union, IoU) — 0,8824. Девять из исследованных в работе конфигураций также продемонстрировали высокие значения метрик DSC (в диапазоне 0,9356–0,9374) и IoU (0,8794–0,8822). Предлагаемый подход на базе предобработанных трехканальных изображений позволяет достигать значений 0,9364 для DSC и 0,8802 для IoU с применением легковесной модели сегментации U-Net. В соответствии с описанным подходом реализован программный модуль на языке Python. Обсуждение. Результаты исследования подтверждают целесообразность применения компьютерного зрения для оценки показателей мышечной ткани. Разработанный модуль может применяться для снижения рутинной нагрузки на рентгенологов.</p></abstract><trans-abstract xml:lang="en"><p>With the increasing routine workload on radiologists associated with the need to analyze large numbers of images, there is a need to automate part of the analysis process. Sarcopenia is a condition in which there is a loss of muscle mass. To diagnose sarcopenia, computed tomography is most often used, from the images of which the volume of muscle tissue can be assessed. The first stage of the analysis is its contouring, which is performed manually, takes a long time and is not always performed with sufficient quality affecting the accuracy of estimates and, as a result, the patient’s treatment plan. The subject of the study is the use of computer vision approaches for accurate segmentation of muscle tissue from computed tomography images for the purpose of sarcometry. The purpose of the study is to develop an approach to solving the problem of segmentation of collected and annotated images. An approach is presented that includes the stages of image pre-processing, segmentation using neural networks of the U-Net family, and post-processing. In total, 63 different configurations of the approach are considered, which differ in terms of data supplied to the input models and model architectures. The influence of the proposed method of post-processing the resulting binary masks on the segmentation accuracy is also evaluated. The approach, which includes pre-processing with table masking and anisotropic diffusion filtering, segmentation with an Inception U-Net architecture model, and post-processing based on contour analysis, achieves a Dice similarity coefficient of 0.9379 and Intersection over Union of 0.8824. Nine other configurations, the experimental results for which are reflected in the article, also demonstrated high values of these metrics (in the ranges of 0.9356–0.9374 and 0.8794–0.8822, respectively). The approach proposed in the article based on preprocessed three-channel images allows us to achieve metrics of 0.9364 and 0.8802, respectively, using the lightweight U-Net segmentation model. In accordance with the described approach, a software module was implemented in Python. The results of the study confirm the feasibility of using computer vision to assess muscle tissue parameters. The developed module can be used to reduce the routine workload on radiologists.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>компьютерное зрение</kwd><kwd>сегментация</kwd><kwd>компьютерная томография</kwd><kwd>мышечная ткань</kwd><kwd>индекс скелетной мускулатуры</kwd><kwd>саркопения</kwd><kwd>диагностика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computer vision</kwd><kwd>segmentation</kwd><kwd>computed tomography</kwd><kwd>muscle tissue</kwd><kwd>skeletal muscle index</kwd><kwd>sarcopenia</kwd><kwd>diagnostics</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">Шеберова Е.В., Силантьева Н.К., Агабабян Т.А., Потапов А.Л., Невольcкиx А.А., Иванов С.А., Каприн А.Д. Роль компьютерной томографии в диагностике саркопении // Сибирский онкологи-ческий журнал. 2023. Т. 22. № 3. 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