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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">sapi</journal-id><journal-title-group><journal-title xml:lang="ru">Системный анализ и прикладная информатика</journal-title><trans-title-group xml:lang="en"><trans-title>«System analysis and applied information science»</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2309-4923</issn><issn pub-type="epub">2414-0481</issn><publisher><publisher-name>Belarusian National Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2309-4923-2017-2-4-11</article-id><article-id custom-type="elpub" pub-id-type="custom">sapi-159</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>Системный анализ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>System analysis</subject></subj-group></article-categories><title-group><article-title>УСКОРЕННАЯ ИТЕРАЦИОННАЯ РЕКОНСТРУКЦИЯ ФАНТОМА “ROZI” МЕТОДОМ OS-SART С ИСПОЛЬЗОВАНИЕМ УПОРЯДОЧЕННЫХ ПОДМНОЖЕСТВ ПРОЕКЦИЙ</article-title><trans-title-group xml:lang="en"><trans-title>ACCELERATED ITERATIVE RECONSTRUCTION OF PHANTOM «ROZI» BY OS-SART METHOD USING ORDERED SUBSET PROJECTIONS</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>Золотарев</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zolotarev</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Золотарев Сергей Алексеевич, доктор технических наук</p><p>220045 Минск, ул. Некрашевича д. 8, кв. 58, служебный тел. 2842304, моб. тел. 8(029) 1957242 </p></bio><bio xml:lang="en"><p>Zolotarev Sergei Alekseevich</p></bio><email xlink:type="simple">zolotarev@iaph.bas-net.by</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>Майтиг</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Mieteeg</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мухаммед Майтиг Мухтар,</p><p>Минск, ул. Одоевского д. 20 корп. 2 , кв. 77, моб. тел. 8(029) 7878641</p></bio><bio xml:lang="en"><p>Mieteeg Muhamed Mukhtar Abdulla, Graduate student </p><p>220092 Minsk, Odoevskogo st., 20 bldg. 2, ap. 77, Mob. tel. 8 (029) 7878641, Velcom, E-mail: mieteeg@gmail.com   </p></bio><email xlink:type="simple">mieteeg@gmail.com</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>Аль-Надфа</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Al-Nadfa</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>2Аль-Надфа Антуан Набилевич, соискатель</p><p>Минск, ул. Слободская д. 79, кв. 54, моб. тел. 8(029) 3560677  </p></bio><bio xml:lang="en"><p>Alnadfa Antoine Nabiljevich, Graduate student  </p><p>220051 Minsk, Slobodskaya, 79, apt. 54, Mob. tel. 8 (029) 3560677, Velcom email: antwan.tiger@gmail.com</p></bio><email xlink:type="simple">antwan.tiger@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт прикладной физики НАН Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Institute of Applied Physics of the NAS of Belarus</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>07</day><month>08</month><year>2017</year></pub-date><volume>0</volume><issue>2</issue><fpage>4</fpage><lpage>11</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Золотарев С.А., Майтиг М.М., Аль-Надфа А.Н., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Золотарев С.А., Майтиг М.М., Аль-Надфа А.Н.</copyright-holder><copyright-holder xml:lang="en">Zolotarev S.A., Mieteeg M.M., Al-Nadfa A.N.</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://sapi.bntu.by/jour/article/view/159">https://sapi.bntu.by/jour/article/view/159</self-uri><abstract><p>Cтатистический метод максимального правдоподобия (EM) и алгебраический метод реконструкции с одновременными итерациями (SART) являются двумя методами итерационной томографической реконструкции. Эти алгоритмы часто используются, когда проекционные данные содержат большое количество статистического шума или были получены из ограниченного диапазона углов. Одним из популярных подходов, используемых для повышения скорости сходимости этих алгоритмов заключается в том, чтобы выполнять коррекцию текущего приближения реконструируемого объекта на подмножествах проекционных данных. Стремление повысить скорость сходимости итерационных методов привело к использованию упорядоченных подмножеств проекций как для метода максимального правдоподобия EM (OS-EM), так и для алгебраического метода реконструкции с одновременными итерациями SART (OS-SART). Эффективность использования упорядоченных подмножеств проекций была установлена сначала для последовательных программ, которые выполняются на центральном процессоре компьютера (CPU). В данной работе оба этих метода были ускорены с помощью использования графической библиотеки OpenGL путем их отражения на архитектуру графического процессора видеокарты.</p></abstract><trans-abstract xml:lang="en"><p>The statistical maximum likelihood (EM) method and the algebraic reconstruction method with simultaneous iterations (SART) are two methods of iterative tomographic reconstruction. These algorithms are often used when the projection data contains a large amount of statistical noise or has been obtained from a limited range of angles. One of the popular approaches used to increase the rate of convergence of these algorithms is to perform a correction of the current approximation of the reconstructed object on subsets of the projection data. The desire to increase the convergence rate of the iterative methods led to the use of ordered subsets of projections for both the maximum likelihood method of EM (OS-EM) and for the algebraic reconstruction method with simultaneous iterations of SART (OS-SART). The efficiency of using ordered subsets of projections was first established for sequential programs that run on the central processor of the computer (CPU). In this work, both these methods have been accelerated by using the OpenGL graphics library by mirroring them on the graphics processor architecture of the video card.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>упорядоченные подмножества</kwd><kwd>коническая томография</kwd><kwd>итерационная реконструкция</kwd><kwd>регуляризация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ordered-subsets</kwd><kwd>cone-beam tomography</kwd><kwd>iterative reconstruction</kwd><kwd>regularization</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">Троицкий, И. Н. Статистическая теория томографии. / И.Н. Троицкий // Москва, Изд-во Радио и связь, – 1989. – 240 с.</mixed-citation><mixed-citation xml:lang="en">Троицкий, И. Н. Статистическая теория томографии. / И.Н. 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