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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">rentrad</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник рентгенологии и радиологии</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of radiology and nuclear medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0042-4676</issn><issn pub-type="epub">2619-0478</issn><publisher><publisher-name>Limited Liability Company "LUCHEVAYA DIAGNOSTIKA", Russian Association of Radiologists</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20862/0042-4676-2015-0-6-114-121</article-id><article-id custom-type="elpub" pub-id-type="custom">rentrad-88</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Количественный анализ диффузионно-взвешенных магнитно-резонансных изображений при химиолучевой терапии рака шейки матки: прогностическая роль измеряемого коэффициента диффузии до начала лечения</article-title><trans-title-group xml:lang="en"><trans-title>Quantitative analysis of diffusion-weighted magnetic resonance images during chemoradiation therapy for cancer of the cervix uteri: Prognostic role of pretreatment diffusion coefficient values</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>Хоружик</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kharuzhyk</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к. м. н., доцент, рентгенолог</p></bio><bio xml:lang="en"><p>MD, PhD, Associate Professor, Radiologist</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГУ «Республиканский научно-практический центр онкологии и медицинской радиологии им. Н.Н. Александрова»</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>N.N. Alexandrov Republican Scientific-and-Practical Center of Oncology and Medical Radiology,</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>09</day><month>03</month><year>2016</year></pub-date><volume>0</volume><issue>6</issue><fpage>12</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хоружик С.А., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Хоружик С.А.</copyright-holder><copyright-holder xml:lang="en">Kharuzhyk S.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://www.russianradiology.ru/jour/article/view/88">https://www.russianradiology.ru/jour/article/view/88</self-uri><abstract><p>Цель исследования – провести количественный анализ диффузионно-взвешенных магнитно-резонансных изображений (ДВИ) при раке шейки матки (РШМ) и оценить возможность использования измеряемого коэффициента диффузии (ИКД) опухоли до начала лечения для прогнозирования эффективности химиолучевой терапии (ХЛТ).</p><sec><title>Материал и методы</title><p>Материал и методы. В проспективное исследование включены 46 женщин с морфологически верифицированным РШМ IB–IVB ст. Всем женщинам до начала и после окончания лечения проводили МРТ органов таза с ДВИ. Полуавтоматическим методом определяли интенсивность сигнала от опухоли на изображениях с фактором диффузии b 1000 с/мм2 (ИС b1000) и ИКД опухоли. У 16 случайно выбранных женщин оценили воспроизводимость измерения ИКД. Сравнивали количественные показатели ДВИ до начала лечения в группах с полной и неполной регрессией (ПР и НПР), наличием и отсутствием прогрессирования опухоли в период наблюдения. Определяли связь ИКД с выживаемостью без прогрессирования (ВБП) и общей выживаемостью (ОВ) пациентов.</p></sec><sec><title>Результаты</title><p>Результаты. Методика полуавтоматического нанесения контура опухоли позволила с минимальными временными затратами и высокой воспроизводимостью определить количественные показатели ДВИ до начала лечения. Средний ИКД опухоли составил 0,82±0,14×10–3 мм2/с. У 28 женщин установлена ПР, у 18 – НПР. Значение ИКД ≤ 0,83×10–3 мм2/c позволяло прогнозировать ПР с чувствительностью 64,3% и специфичностью 77,8% (р=0,007). Медиана наблюдения составила 47 мес (интервал 3–82 мес). При ИКД ≤ 0,86×10–3 мм2/c 5-летняя ВБП составила 74,1% по сравнению с 42,1% при более высоком значении ИКД (р=0,023), 5-летняя ОВ – 70,4 и 40,6% соответственно (р=0,021). Различие выживаемости в зависимости от степени регрессии опухоли было недостоверным. ИС b1000 до начала лечения не имела прогностического значения.</p></sec><sec><title>Заключение</title><p>Заключение. Измеряемый коэффициент диффузии опухоли до начала лечения может служить биомаркером прогноза эффективности ХЛТ при раке шейки матки.</p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Objective</title><p>Objective: to carry out a quantitative analysis of diffusionweighted magnetic resonance images (DWI) in cancer of the cervix uteri (CCU) and to estimate the possibility of using pretreatment measured diffusion coefficient (MDC) to predict chemoradiation therapy (CRT).</p></sec><sec><title>Material and methods</title><p>Material and methods. The investigation prospectively enrolled 46 women with morphologically verified Stages IB-IVB CCU. All the women underwent diffusion-weighted magnetic resonance imaging of pelvic organs before and after treatment. A semiautomatic method was used to determine tumor signal intensity (SI) on DWI at b 1000 s/mm2 (SI b1000) and tumor MDC. The reproducibility of MDC  measurements was assessed in 16 randomly selected women. The investigators compared the pretreatment quantitative DWI measures in complete and incomplete regression (CR and IR) groups and the presence and absence of tumor progression during a follow-up. An association of MDC with progression-free and overall  survivals (PFS and OS) was determined in the patients.</p></sec><sec><title>Results</title><p>Results. A semi-automatic tumor segmentation framework could determine the pretreatment quantitative DMI measures with minimal time spent and high reproducibility. The mean tumor MDC was 0.82±0.14×10–3 mm2/s. CR and IR were established in 28 and 18 women, respectively. The MDC ≤ 0.83×10–3 mm2/s predicted CR with a sensitivity of 64.3% and a specificity of 77.8% (р=0.007). The median follow-up was 47 months (range, 3–82 months). With the MDC ≤ 0.86×10–3 mm2/s, 5-year PFS was 74.1% versus 42.1% with a higher MDC (р=0.023) and</p></sec><sec><title>5-year OS was 70</title><p>5-year OS was 70.4 and 40.6%, respectively (р=0.021). The survival difference was insignificant in relation to the degree of tumor regression. The pretreatment IS at b1000 was of no prognostic value.</p></sec><sec><title>Conclusion</title><p>Conclusion. The pretreatment tumor MDC may serve as a biomarker for predicting the efficiency of CRT for CCU.</p></sec><sec><title> </title><p> </p></sec><sec><title> </title><p> </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>рак шейки матки</kwd><kwd>диффузионно-взвешенная магнитно-резонансная томография</kwd><kwd>измеряемый коэффициент диффузии</kwd><kwd>прогнозирование</kwd><kwd>регрессия опухоли</kwd><kwd>выживаемость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cancer of the cervix uteri</kwd><kwd>diffusion-weighted magnetic resonance imaging</kwd><kwd>measured diffusion coefficient</kwd><kwd>prediction</kwd><kwd>tumor regression</kwd><kwd>survival</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">Sukonko O.G. (ed.) Cancer statistics in the Republic of Belarus (2003–2012). Minsk; 2013 (in Russian).</mixed-citation><mixed-citation xml:lang="en">Sukonko O.G. (ed.) 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