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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Traumatology and Orthopedics of Russia</journal-id><journal-title-group><journal-title xml:lang="en">Traumatology and Orthopedics of Russia</journal-title><trans-title-group xml:lang="ru"><trans-title>Травматология и ортопедия России</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2311-2905</issn><issn publication-format="electronic">2542-0933</issn><publisher><publisher-name xml:lang="en">Vreden National Medical Research Center of Traumatology and Orthopedics</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1731</article-id><article-id pub-id-type="doi">10.17816/2311-2905-1731</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Theoretical and experimental studies</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Теоретические и экспериментальные исследования</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>Theoretical and experimental studies</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Different Models of Dual-Energy Bone DXA Scanners: A Comparative Study</article-title><trans-title-group xml:lang="ru"><trans-title>Сравнение двухэнергетических денситометров различных моделей</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title/></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1694-4682</contrib-id><contrib-id contrib-id-type="scopus">6507474696</contrib-id><contrib-id contrib-id-type="researcherid">P-7759-2017</contrib-id><contrib-id contrib-id-type="spin">6193-1656</contrib-id><name-alternatives><name xml:lang="en"><surname>Petraikin</surname><given-names>Alexey V.</given-names></name><name xml:lang="ru"><surname>Петряйкин</surname><given-names>Алексей Владимирович</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>alexeypetraikin@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8235-9361</contrib-id><contrib-id contrib-id-type="scopus">56964518000</contrib-id><contrib-id contrib-id-type="researcherid">P-7313-2017</contrib-id><contrib-id contrib-id-type="spin">5891-4384</contrib-id><name-alternatives><name xml:lang="en"><surname>Akhmad</surname><given-names>Ekaterina S.</given-names></name><name xml:lang="ru"><surname>Ахмад</surname><given-names>Екатерина Сергеевна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Cand. Sci. (Med.)</p></bio><email>e.ahmad@npcmr.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4293-2514</contrib-id><contrib-id contrib-id-type="researcherid">P-5228-2017</contrib-id><contrib-id contrib-id-type="spin">2278-7290</contrib-id><name-alternatives><name xml:lang="en"><surname>Semenov</surname><given-names>Dmitry S.</given-names></name><name xml:lang="ru"><surname>Семенов</surname><given-names>Дмитрий Сергеевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Researcher, Department of Innovative Technology</p></bio><bio xml:lang="ru"><p>научный сотрудник, отдел инновационных технологий</p></bio><email>d.semenov@npcmr.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2960-9787</contrib-id><contrib-id contrib-id-type="scopus">57221433873</contrib-id><contrib-id contrib-id-type="spin">7550-2441</contrib-id><name-alternatives><name xml:lang="en"><surname>Artyukova</surname><given-names>Zlata R.</given-names></name><name xml:lang="ru"><surname>Артюкова</surname><given-names>Злата Романовна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Department of Innovative Technology</p></bio><bio xml:lang="ru"><p>младший научный сотрудник, отдел инновационных технологий</p></bio><email>zl.artyukova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4203-0630</contrib-id><contrib-id contrib-id-type="scopus">57213148303</contrib-id><contrib-id contrib-id-type="researcherid">AAG-1869-2020</contrib-id><contrib-id contrib-id-type="spin">1125-8637</contrib-id><name-alternatives><name xml:lang="en"><surname>Kudryavtsev</surname><given-names>Nikita D.</given-names></name><name xml:lang="ru"><surname>Кудрявцев</surname><given-names>Никита Дмитриевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Junior Researcher, Department of Innovative Technology</p></bio><bio xml:lang="ru"><p>младший научный сотрудник, отдел инновационных технологий</p></bio><email>n.kudryavtsev@npcmr.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6923-3839</contrib-id><name-alternatives><name xml:lang="en"><surname>Petriaikin</surname><given-names>Fedor A.</given-names></name><name xml:lang="ru"><surname>Петряйкин</surname><given-names>Федор Алексеевич</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>feda.petraykin@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9614-4505</contrib-id><contrib-id contrib-id-type="scopus">6602750908</contrib-id><contrib-id contrib-id-type="researcherid">T-8987-2017</contrib-id><contrib-id contrib-id-type="spin">9957-8107</contrib-id><name-alternatives><name xml:lang="en"><surname>Nizovtsova</surname><given-names>Ludmila A.</given-names></name><name xml:lang="ru"><surname>Низовцова</surname><given-names>Людмила Арсеньевна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Med.), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><email>nizovtsova@npcmr.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Научно-практический клинический центр диагностики и телемедицинских технологий Департамента здравоохранения г. Москвы»</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Московский государственный университет им М.В. Ломоносова»</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2022-04-13" publication-format="electronic"><day>13</day><month>04</month><year>2022</year></pub-date><pub-date date-type="pub" iso-8601-date="2022-06-28" publication-format="electronic"><day>28</day><month>06</month><year>2022</year></pub-date><volume>28</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>48</fpage><lpage>57</lpage><history><date date-type="received" iso-8601-date="2022-01-27"><day>27</day><month>01</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-04-01"><day>01</day><month>04</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Petraikin A.V., Akhmad E.S., Semenov D.S., Artyukova Z.R., Kudryavtsev N.D., Petriaikin F.A., Nizovtsova L.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Петряйкин А.В., Ахмад Е.С., Семенов Д.С., Артюкова З.Р., Кудрявцев Н.Д., Петряйкин Ф.А., Низовцова Л.А.</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2022, Petraikin A., Akhmad E., Semenov D., Artyukova Z., Kudryavtsev N., Petriaikin F., Nizovtsova L.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Petraikin A.V., Akhmad E.S., Semenov D.S., Artyukova Z.R., Kudryavtsev N.D., Petriaikin F.A., Nizovtsova L.A.</copyright-holder><copyright-holder xml:lang="ru">Петряйкин А.В., Ахмад Е.С., Семенов Д.С., Артюкова З.Р., Кудрявцев Н.Д., Петряйкин Ф.А., Низовцова Л.А.</copyright-holder><copyright-holder xml:lang="zh">Petraikin A., Akhmad E., Semenov D., Artyukova Z., Kudryavtsev N., Petriaikin F., Nizovtsova L.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journal.rniito.org/jour/article/view/1731">https://journal.rniito.org/jour/article/view/1731</self-uri><abstract xml:lang="en"><p><bold><italic>Background.</italic></bold> Dual-energy X-ray absorptiometry (DXA) is an effective method for bone mineral density (BMD) and subcutaneous fat percentage estimation. The constant development of new densitometry techniques, the demographic change and the higher potential of artificial intelligence in healthcare enhance requirements for the high-quality measurements in DXA.</p> <p><bold><italic>This study aimed </italic></bold>to develop a quality control method for DXA scanners and compare four DXA systems with different X-ray geometries and manufacturers when simulating fat-water environments.</p> <p><bold><italic>Methods. </italic></bold>We evaluated the accuracy (relative error (ε%) and precision (CV%)) of the bone mineral density (BMD) measurements, performed by the four DXA scanners: 2 with narrow-angle fan beam (64- and 16-channel detectors (DXA-1, DXA-2)); 1 with wide-angle fan beam (DXA-3); 1 with pencil beam (DXA-4). We used a PHK (PHantom Kalium) designed to imitate spine. The PHK contained four vertebras filled with a K<sub>2</sub>HPO<sub>4</sub> solution in various concentrations (50-200 mg/ml). The PHK also included paraffin patches (thickness 40 mm) to simulate the fat layer.</p> <p><bold><italic>Results. </italic></bold>DXA-1 and DXA-2 demonstrated the best CV% ranged from 0.56% to 1.05%. The least ε% was observed when scanning PHK with fat layer on DXA-1 and DXA-2 (1.74% and 0.85%) and DXA-4 (1.47%). DXA-3 produced significantly lower BMD (ε = -14.56%, p = 0.000). After removing the fat layer, we observed reduction (p = 0.000) of BMD for DXA- 1 and DXA-2 (ε = -5.11% and -6.12% respectively) and weak deviation (p = 0.80) for DXA-4 (0.87%). For DXA-3, removal of the fat layer also resulted in a significant reduction in BMD (ε = -16.44%, p = 0.000). The subcutaneous fat modeling showed that all these DXA systems automatically determine the percentage of fat in the scanned area with weak underestimation: for DXA-1, DXA-2 and DXA-4 the ε% were -5,9%, -6,3% and -2,3% respectively. CV% were 0.15%; 0.39%; 1.6%, respectively.</p> <p><bold><italic>Conclusions. </italic></bold>We proved a significant underestimation of the BMD measurements across the entire range of simulated parameters for the DXA scanners when the model did not include the subcutaneous fat layer. All models demonstrated high accuracy in measuring the fat layer, with the exception of the DXA-3 model, which was not assessed in these studies.</p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Актуальность. </italic></bold>Двухэнергетическая рентгеновская абсорбциометрия (ДРА) — это эффективный метод оценки минеральной плотности костной ткани (МПК) и подкожно-жировой клетчатки (ПЖК). Постоянное развитие новых методов денситометрии, старение населения и высокий потенциал применения технологий искусственного интеллекта в здравоохранении усиливают потребности в получении высококачественных измерений МПК в ДРА.</p> <p><bold><italic>Цель исследования </italic></bold>— разработать средства и методы контроля ДРА сканеров и провести сравнение четырех денситометров разной геометрии и фирм-производителей при моделировании различного водно-жирового окружения.</p> <p><bold><italic>Материал и методы. </italic></bold>В ходе работы проведена оценка точности (относительной погрешности (ε%) и воспроизводимости (CV%)) измерений МПК четырех рентгеновских денситометров: два — с узковеерным пучком рентгеновского излучения с 64- и 16 рядами детекторов (DXA-1, DXA-2), один — с широковеерным пучком (DXA-3); один — с пучком карандашного типа (DXA-4). Для сравнения использовался фантом PHK (PHantom Kalium), моделирующий МПК поясничной области: четыре модели позвонков от нормы до остеопороза, содержащие гидрофосфат калия в различной концентрации — 50–200 мг/мл. PHK также включал парафиновые накладки (толщиной 40 мм), имитирующие ПЖК.</p> <p><bold><italic>Результаты. </italic></bold>DXA-1 и DXA-2 имеют наилучшую CV%, определенную в диапазоне от 0,56% до 1,05%. Наименьшая ε% отмечена при сканировании PHK с ПЖК для DXA-1 и DXA-2 (1,74% и 0,85%) и DXA-4 (1,47%). При исключении ПЖК наблюдаются снижение МПК для DXA-1 и DXA-2 (ε = -5,11% и -6,12% соответственно) и небольшое отклонение (<italic>p</italic> = 0,80) для DXA-4 (ε = 0,87%). DXA-3 демонстрирует существенно заниженные данные измеренной МПК (ε = -14,56%; <italic>p</italic> = 0,000) при сканировании PHK с ПЖК. Однако исключение ПЖК также приводит к значительному (<italic>p</italic> = 0,000) снижению МПК (ε = -16,44%; <italic>p</italic> = 0,000). При анализе точности определения жирового слоя для DXA-1, DXA-2, DXA-4 отмечалась незначительная недооценка заданных показателей на -5,9%, -6,3% и -2,3% соответственно. При этом CV результатов составила 0,15%; 0,39%; 1,6%.</p> <p><bold><italic>Заключение. </italic></bold>Результаты исследования подтвердили значительную недооценку МПК для всего диапазона возможных значений при сканировании PHK без ПЖК. Модели продемонстрировали высокую точность измерения жирового слоя за исключением DXA-3 сканера, для которого этот параметр в исследовании не оценивался.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>DXA</kwd><kwd>dual-energy X-ray absorptiometry</kwd><kwd>densitometry</kwd><kwd>bone mineral density</kwd><kwd>osteoporosis</kwd><kwd>precision</kwd><kwd>relative error</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>ДРА</kwd><kwd>двухэнергетическая рентгеновская абсорбциометрия</kwd><kwd>денситометрия</kwd><kwd>минеральная плотность кости</kwd><kwd>остеопороз</kwd><kwd>воспроизводимость</kwd><kwd>относительная погрешность</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Moscow Healthcare Department “Scientific Support of the Capital’s Healthcare”</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Департамент здравоохранения города Москвы «Научное обеспечение столичного здравоохранения»</institution></institution-wrap></funding-source><award-id>ЕГИСУ: АААА-А20-120071090045-7</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Мельниченко Г.А., Белая Ж.Е., Рожинская Л.Я., Торопцова Н.В., Алексеева Л.И., Бирюкова Е.В. и др. 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