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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">radhyd</journal-id><journal-title-group><journal-title xml:lang="ru">Радиационная гигиена</journal-title><trans-title-group xml:lang="en"><trans-title>Radiatsionnaya Gygiena = Radiation Hygiene</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-426X</issn><issn pub-type="epub">2409-9082</issn><publisher><publisher-name>NIIRG</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21514/1998-426X-2018-11-1-93-100</article-id><article-id custom-type="elpub" pub-id-type="custom">radhyd-542</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>Научные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Scientific articles</subject></subj-group></article-categories><title-group><article-title>ОПРЕДЕЛЕНИЕ КОЭФФИЦИЕНТОВ ПЕРЕХОДА ОТ ПРОИЗВЕДЕНИЯ ДОЗЫ НА ПЛОЩАДЬ  К ЭФФЕКТИВНОЙ ДОЗЕ ДЛЯ РЕНТГЕНОСКОПИЧЕСКИХ ИССЛЕДОВАНИЙ ЖЕЛУДКА С БАРИЕВЫМ  КОНТРАСТОМ ДЛЯ ВЗРОСЛЫХ ПАЦИЕНТОВ</article-title><trans-title-group xml:lang="en"><trans-title>ESTIMATION OF THE CONVERSION COEFFICIENTS FROM DOSE-AREA PRODUCT  TO EFFECTIVE DOSE FOR BARIUM MEAL EXAMINATIONS FOR ADULT PATIENTS</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>Водоватов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vodovatov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Водоватов Александр Валерьевич.</p><p>197101, Санкт-Петербург, ул. Мира, д. 8</p></bio><bio xml:lang="en"><p>Aleksandr V. Vodovatov – PhD, the acting head of the Protection Laboratory, SPRIRH after Professor P.V. Ramzaev; Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being.</p><p>Mira Str., 8, Saint-Petersburg, 197101</p></bio><email xlink:type="simple">vodovatoff@gmail.com</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>Голиков</surname><given-names>В. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Golikov</surname><given-names>V. Yu.</given-names></name></name-alternatives><bio xml:lang="en"><p>Vladislav Yu. Golikov – leading scientist, the Protection Laboratory</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Камышанская</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kamyshanskaya</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="en"><p>Irina G. Kamyshanskaya – MD, PhD, associate Professor SPSU Department of Oncology, head of X-ray Department, St-Petersburg UMH</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Зинкевич</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zinkevich</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kseniya V. Zinkevich – resident.</p><p>St-Petersburg</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бернхардссон</surname><given-names>К.</given-names></name><name name-style="western" xml:lang="en"><surname>Bernhardsson</surname><given-names>Ch.</given-names></name></name-alternatives><bio xml:lang="en"><p>Christian Bernhardsson – PhD, associated professor MRPDepartment of Translational Medicine LU, SUH.</p><p>Malmö</p></bio><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский научно-исследовательский институт радиационной гигиены имени профессора  П.В. Рамзаева, Федеральная служба по надзору в сфере защиты прав потребителей и благополучия человека</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Городская Мариинская больница; Санкт-Петербургский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint-Petersburg State University; Urban Mariinsky hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Urban Mariinsky hospital</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Группа медицинской физики, департамент естественных наук Лундского университета, университетский госпиталь региона Скона</institution><country>Швеция</country></aff><aff xml:lang="en"><institution>Medical Radiation Physics, Department of Translational Medicine, Lund University, Skåne University Hospital</institution><country>Sweden</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>10</day><month>04</month><year>2018</year></pub-date><volume>11</volume><issue>1</issue><fpage>93</fpage><lpage>100</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Водоватов А.В., Голиков В.Ю., Камышанская И.Г., Зинкевич К.В., Бернхардссон К., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Водоватов А.В., Голиков В.Ю., Камышанская И.Г., Зинкевич К.В., Бернхардссон К.</copyright-holder><copyright-holder xml:lang="en">Vodovatov A.V., Golikov V.Y., Kamyshanskaya I.G., Zinkevich K.V., Bernhardsson C.</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://www.radhyg.ru/jour/article/view/542">https://www.radhyg.ru/jour/article/view/542</self-uri><abstract><p>Рентгеноскопические исследования верхнего отдела желудочно-кишечного тракта и, в особенности, исследования желудка с бариевым контрастом, являются широко распространенными и выполняются практически во всех медицинских организациях. Данные исследования сопровождаются как значительными индивидуальными дозами пациентов, так и существенным вкладом в коллективную дозу населения Российской Федерации от медицинского облучения. Определение эффективных доз пациентов для данных исследований затруднено в связи с: 1) необходимостью учитывать движущееся поле облучения; 2) различиями в структуре исследования между индивидуальными пациентами; 3) субъективными факторами при выполнении данных исследований врачами-рентгенологами; и 4) различиями в рентгеновских аппаратах. Целью данного исследования являлось определение коэффициентов перехода от произведения дозы на площадь к эффективной дозе для рентгеноскопических исследований желудка с бариевым контрастом для различных условий расположения рентгеновской трубки (над и под столом). Исследование было выполнено на основе данных, собранных в хирургическом отделении Санкт-Петербургской городской Мариинской больницы. По результатам сбора данных по параметрам проведения и структуре исследования была разработана модель облучения пациента при выполнении рентгеноскопии желудка с бариевым контрастом. Коэффициенты перехода определяли с использованием программного обеспечения PCXMC 2.0. Рентгеноскопические исследования были разделены на набор стандартных фаз просвечивания и рентгеновских снимков, соответствующих исследуемым анатомическим зонам и проекциям облучения. Коэффициенты перехода от произведения дозы на площадь к эффективной дозе были определены как для каждой из фаз, так и для полного рентгеноскопического исследования желудка с бариевым контрастом. Полученные результаты сравнимы с опубликованными данными. Различия в абсолютных значениях коэффициентов перехода могут быть объяснены различиями в протоколах и параметрах проведения рентгеноскопических исследований желудка, а также в использованных моделях для расчета эффективной дозы. Предложенный в данной работе подход к оценке эффективной дозы учитывает все важные особенности рентгеноскопических исследований: 1) различия в структуре исследования; 2) существенное перемещение рентгеновской трубки в рамках одной фазы рентгеноскопии и 3) различия в геометриях облучения пациента в рамках одного рентгеноскопического исследования.</p></abstract><trans-abstract xml:lang="en"><p>Fluoroscopic examinations of the upper gastro-intestinal tract and, especially, barium meal examinations, are commonly performed in a majority of hospitals. These examinations are associated both with substantial individual patient doses and contribution to the collective dose from medical exposure. Effective dose estimation for this type of examinations is complicated due to: 1) the necessity to simulate the moving X-ray irradiation field; 2) differences in study structure for the individual patients; 3) subjectivity of the operators; and 4) differences in the X-ray equipment. The aim of the current study was to estimate conversion coefficients from dose-area product to effective dose for barium meal examinations for the over couch and under couch exposure conditions. The study was based on data collected in the X-ray unit of the surgical department of the St-Petersburg Mariinsky hospital. A model of patient exposure during barium meal examination was developed based on the collected data on fluoroscopy protocols and adult patient irradiation geometry. Conversion coefficients were calculated using PCXMC 2.0 software. Complete examinations were converted into a set of typical fluoroscopy phases and X-ray images, specified by the examined anatomical region and the projection of patient exposure. Conversion coefficients from dose-area product to effective dose were calculated for each phase of the examination and for the complete examination. The resulting values of the conversion coefficients are comparable with published data. Variations in the absolute values of the conversion coefficients can be explained by differences in clinical protocols, models for the estimation of the effective dose and parameters of barium meal examinations. The proposed approach for estimation of effective dose considers such important features of fluoroscopic examinations as: 1) non-uniform structure of examination, 2) significant movement of the X-ray tube within a single fluoroscopic phase, and 3) the variety of exposure geometries within complete examination.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>рентгеноскопия</kwd><kwd>коэффициенты перехода</kwd><kwd>эффективная доза</kwd><kwd>рентгеноскопия желудка с бариевым контрастом</kwd></kwd-group><kwd-group xml:lang="en"><kwd>barium meal</kwd><kwd>fluoroscopy</kwd><kwd>effective dose</kwd><kwd>conversion coefficients</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">Barkovsky A.N. [et. al.]. Doses from ionizing radiation to the public of Russian Federation in 2015. Information bulletin. St-Petersburg, 2016, 73 p. 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