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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">medvis</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская визуализация</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Visualization</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1607-0763</issn><issn pub-type="epub">2408-9516</issn><publisher><publisher-name>RDS-Media Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24835/1607-0763-2020-1-48-58</article-id><article-id custom-type="elpub" pub-id-type="custom">medvis-885</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>ГРУДНАЯ КЛЕТКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THORAX</subject></subj-group></article-categories><title-group><article-title>Динамическая компьютерная томография легких с пониженной лучевой нагрузкой</article-title><trans-title-group xml:lang="en"><trans-title>Dynamic computed tomography of the lungs with reduced radiation load</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7663-0362</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петросян</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrosian</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>научный сотрудник отделения компьютерной томографии </p><p>SPIN-код: 3640-2594249031 Калужская область, г. Обнинск, ул. Маршала Жукова, д. 10, Российская Федерация</p><p>Тел.: +7-953-316-24-64</p></bio><bio xml:lang="en"><p> </p><p>Phone: +7-953-316-24-64 </p></bio><email xlink:type="simple">79533162464@yandex.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>Силантьева</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Silanteva</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>10 Marshala Zhukova str., Kaluga Region, Obninsk, 249036, Russian Federation</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>Санин</surname><given-names>Д. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Sanin</surname><given-names>D. B.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>10 Marshala Zhukova str., Kaluga Region, Obninsk, 249036, Russian Federation</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>Каприн</surname><given-names>А. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Kaprin</surname><given-names>A. D.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>10 Marshala Zhukova str., Kaluga Region, Obninsk, 249036, Russian Federation</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>Иванов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>10 Marshala Zhukova str., Kaluga Region, Obninsk, 249036, Russian Federation</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>Усачева</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Usacheva</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"><p>10 Marshala Zhukova str., Kaluga Region, Obninsk, 249036, Russian Federation</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>Проскурина</surname><given-names>М. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Proskurina</surname><given-names>M. F.</given-names></name></name-alternatives><bio xml:lang="ru"/><bio xml:lang="en"/><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Медицинский радиологический научный центр имени А.Ф. Цыба – филиал ФГБУ “Национальный медицинский исследовательский центр радиологии” Минздрава России<country>Россия</country></aff><aff xml:lang="en">A. Tsyb Medical Radiological Research Centre – Branch of the National Medical Radiology Research Centre of the Ministry of Health of the Russian Federation<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">GE Healthcare Россия и СНГ<country>Россия</country></aff><aff xml:lang="en">GE Healthcare Russia and the CIS<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>30</day><month>04</month><year>2020</year></pub-date><volume>24</volume><issue>1</issue><issue-title>Медицинская визуализация 2020№1</issue-title><fpage>48</fpage><lpage>58</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Петросян А.П., Силантьева Н.К., Санин Д.Б., Каприн А.Д., Иванов С.А., Усачева А.Ю., Проскурина М.Ф., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Петросян А.П., Силантьева Н.К., Санин Д.Б., Каприн А.Д., Иванов С.А., Усачева А.Ю., Проскурина М.Ф.</copyright-holder><copyright-holder xml:lang="en">Petrosian A.P., Silanteva N.K., Sanin D.B., Kaprin A.D., Ivanov S.A., Usacheva A.Y., Proskurina M.F.</copyright-holder><license 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://medvis.vidar.ru/jour/article/view/885">https://medvis.vidar.ru/jour/article/view/885</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования: оценка возможности применения метода динамической КТ легких с пониженной лучевой нагрузкой.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. Исследование основано на применении двух протоколов динамической КТ легких у 97 больных с одиночными очагами в легких. КТ-исследование выполняли на компьютерном томографе GE Optima CT660 с болюсным введением 100 мл йодсодержащего контрастного препарата со скоростью введения 3,5 мл/с. Нативное исследование проводили от уровня яремной вырезки до диафрагмальных синусов. После этого сканировали область очага на 30-й секунде, 1, 2, 4, 6, 15-й минутах после введения контрастного вещества. В зависимости от используемого протокола сканирования пациенты были разделены на 2 группы. Параметры протокола 1-й группы пациентов (n = 20): поле облучения (натив/контрастные фазы) 270–340 мм/100–140  мм; напряжение 120 кВ; сила тока 80–400 мА; время вращения трубки 0,6 с; толщина среза 5 мм. Параметры протокола сканирования 2-й группы пациентов (n = 50): поле облучения (натив/контрастные фазы) 270–340 мм/30–45 мм; напряжение 100 кВ; сила тока 80–400 мА; время вращения трубки 0,6 с; толщина среза 5 мм. Количественная оценка включала измерение эффективной дозы облучения. Качественная оценка каждого исследования включала анализ полученных КТ-сканов с оценкой степени “шума” изображения и его влияния на интерпретацию полученных КТ-данных.</p></sec><sec><title>Результаты</title><p>Результаты. В 1-й группе пациентов напряжение на трубке составило 120 кВ, поле облучения в нативную фазу находилось в пределах 270–340 мм, при контрастных фазах исследования – в пределах 100–140 мм (124,5 ± 12,8 мм), при этом эффективная доза облучения находилась в пределах 13,7–21,5 мЗв и в среднем составила 18,1 ± 2,4 мЗв. Во 2-й группе пациентов поле облучения в нативную фазу находилось в пределах 270–340 мм, при контрастных фазах исследования – в пределах 30–45 мм (36,0 ± 6,1 мм), эффективная доза облучения при этом варьировала в пределах 5,1–10,2 мЗв и в среднем составила 7,6 ± 1,7 мЗв.</p></sec><sec><title>Заключение</title><p>Заключение. Использование разработанного протокола КТ-исследования при проведении динами ческой КТ органов грудной клетки обеспечивает снижение дозы облучения в среднем на 42% с сохранением адекватной оценки данных о накоплении и вымывании контрастного вещества образованием. </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Aim</title><p>Aim. To evaluate the possibilities of dynamic lung CT using a low-dose scanning Protocol.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. The study is based on the experience of using two protocols of dynamic lung CT in 97 patients with single foci in the lungs. CT study was performed on a multispiral computed tomograph GE Optima CT660 with bolus administration of 100 ml of iodine-containing drug at a rate of 3.5 ml/sec. Native the study was conducted from the level of the jugular notch to the diaphragmatic sinuses. After that, the focus area was scanned for 30 seconds, 1, 2, 4, 6, 15 minutes after administration of contrast agent. Depending on the scanning Protocol used, the patients were divided into 2 groups. The Protocol of the first group of patients (n = 20) included the following parameters: radiation field (Nativ/contrast phase) – 270–340 mm/100-140 mm; voltage – 120 kV; the current 80–400 mA; rotation time of the tube – 0,6 sec; slice thickness 5 mm. the parameters of the scanning Protocol of the second group of patients (n = 50): radiation field (Nativ/contrast phase) – 270–340 mm/30–45 mm; voltage – 100 kV; the current 80–400 mA; rotation time of the tube – 0,6 sec; the slice thickness is 5 mm. Quantitative assessment included measurement of effective dose. Qualitative assessment of each study included the analysis of the CT scans obtained with an assessment of the degree of “noise” of the image and its impact on the interpretation of the obtained CT data.</p></sec><sec><title>Results</title><p>Results. In the first group of patients, the tube voltage was 120 kV, the irradiation field in the native phase was within 270–340 mm, in contrast phases of the study-within 100–140 mm (124.5 ± 12.8 mm), while the effective dose ranged from 13.7 mSv to 21.5 mSv and averaged 18.1 ± 2.4 mSv. In the second group of patients radiation field in the native phase was in the range of 270–340 mm, the contrast phase of the study – in the range of 30–45 mm (36.0 ± 6.1 mm), the effective radiation dose was varied in the range of 5.1 mSv – 10.2 mSv and the average was 7.6 ± 1.7 mSv.</p></sec><sec><title>Conclusion</title><p>Conclusion. The use of the developed Protocol of CT-study in the dynamic CT of the chest provides a reduction in the dose of radiation by an average of 42% while maintaining an adequate assessment of the data on the accumulation and leaching of contrast agent formation. </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>компьютерная томография</kwd><kwd>динамическая КТ</kwd><kwd>одиночный очаг в легких</kwd><kwd>эффективная доза облучения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computed tomography</kwd><kwd>dynamic CT</kwd><kwd>solitary pulmonary nodule</kwd><kwd>effective radiation dose</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">Barkhausen J., Stöblen F., Müller R.D., Streubühr U., Ewen K. Effect of collimation and pitch on radiation exposure and image quality in spiral CT of the thorax. 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