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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8358-2021-66-3-356-364</article-id><article-id custom-type="elpub" pub-id-type="custom">vestift-688</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>ДИАГНОСТИКА И БЕЗОПАСНОСТЬ ТЕХНИЧЕСКИХ И ПРИРОДНЫХ СИСТЕМ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DIAGNOSTICS AND SAFETY OF TECHNICAL AND ENVIRONMENT SYSTEMS</subject></subj-group></article-categories><title-group><article-title>Влияние реконструкционных параметров сканирования позитронно-эмиссионного томографа на эффект частичного объема патологического очага</article-title><trans-title-group xml:lang="en"><trans-title>Influence of reconstruction parameters of positron emission tomograph scanning on the effect of partial volume of the pathological lesion</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>Емельяненко</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Emelyanenko</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Емельяненко Евгений Владимирович – аспирант, инженер лаборатории позитронно-эмиссионной томографии</p><p>аг. Лесной, 223040, Минский р-н, Минская обл.</p></bio><email xlink:type="simple">zheka-ava@mail.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>Тарутин</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarutin</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тарутин Игорь Германович – доктор технических наук, профессор, главный научный сотрудник лаборатории лучевой терапии</p><p>аг. Лесной, 223040, Минский р-н, Минская обл.</p></bio><email xlink:type="simple">itarutin@tut.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>Белобоков</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Belobokov</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Белобоков Павел Андреевич – инженер лаборатории позитронно-эмиссионной томографии</p><p>аг. Лесной, 223040, Минский р-н, Минская обл.</p></bio><email xlink:type="simple">pashkabely@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Республиканский научно-практический центр онкологии и медицинской радиологии им. Н. Н. Александрова</institution></aff><aff xml:lang="en"><institution>N. N. Aleksandrov National Cancer Center</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>12</day><month>10</month><year>2021</year></pub-date><volume>66</volume><issue>3</issue><fpage>356</fpage><lpage>364</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Емельяненко Е.В., Тарутин И.Г., Белобоков П.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Емельяненко Е.В., Тарутин И.Г., Белобоков П.А.</copyright-holder><copyright-holder xml:lang="en">Emelyanenko E.V., Tarutin I.G., Belobokov P.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://vestift.belnauka.by/jour/article/view/688">https://vestift.belnauka.by/jour/article/view/688</self-uri><abstract><p>Выполнен сравнительный анализ методов обработки данных при расчете коэффициентов восстановления. Оценено влияние времяпролетной технологии и PSF-функции на коэффициент восстановления и прогноз девиации коэффициента восстановления для потенциальных патологических очагов диаметром 6–8 мм, а также параметров итерационных реконструкционных алгоритмов, фильтра Гаусса и аксиальных фильтров – на коэффициент восстановления. Расчет коэффициентов восстановления выполнен на основе количественных характеристик, полученных при анализе реконструкций изображений фантома IEC c шестью сферами, инсталлированными внутрь и заполненными радиофармацевтическим препаратом. Проведено восемь серий экспериментов с соотношениями активности фон/сфера 1/3, 1/4, 1/6, 1/8, 1/12, 1/14, 1/16, 1/20 при одинаковой концентрации активности в сферах во время каждого отдельного эксперимента. Выполнен прогноз влияния эффекта частичного объема на очаги диаметром от 6 до 8 мм с учетом используемых реконструкционных алгоритмов. Полученные результаты целесообразно использовать для гармонизации диагностических протоколов сканирования на позитронно-эмиссионных томографах за счет входных параметров реконструкционных алгоритмов и фильтров, что позволит минимизировать ошибку при количественной оценке радиофармацевтического препарата при анализе динамики развития патологического процесса, а также отклика патологии на терапию.</p></abstract><trans-abstract xml:lang="en"><p>In this work, the following tasks were solved: to perform a comparative analysis of data processing methods when calculating recovery factors; to evaluate the influence of time-of-flight technology and PSF function on the recovery factor and the forecast of recovery factor deviation for potential pathological foci with a diameter of 6–8 mm; to evaluate the influence of parameters of iterative reconstruction algorithms, Gaussian filter and axial filters on the recovery factor. The calculation of the recovery factors was carried out on the basis of quantitative characteristics obtained in the analysis of reconstructions of images of the IEC phantom with six spheres installed inside and filled with a radiopharmaceutical. Eight series of experiments with background / sphere activity ratios 1/3, 1/4, 1/6, 1/8, 1/12, 1/14, 1/16, 1/20 were carried out with the same concentration of activity in the spheres during each separate experiment. The forecast of the effect of the partial volume effect on lesions with a diameter of 6 to 8 mm was carried out, taking into account the used reconstruction algorithms. It is advisable to use the results obtained to harmonize diagnostic protocols for scanning with positron emission tomographs using the input parameters of reconstruction algorithms and filters, which will minimize the error in the quantitative assessment of a radiopharmaceutical when analyzing the dynamics of the development of a pathological process, as well as the response of pathology to therapy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>коэффициент восстановления</kwd><kwd>стандартизированный показатель накопления</kwd><kwd>контроль качества</kwd><kwd>позитронно-эмиссионный томограф</kwd><kwd>итерации</kwd><kwd>качество изображения</kwd><kwd>диагностическое изображение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>recovery factor</kwd><kwd>standardized accumulation index</kwd><kwd>quality control</kwd><kwd>positron emission tomograph</kwd><kwd>iterations</kwd><kwd>image quality</kwd><kwd>diagnostic image</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">Vaquero, J. 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