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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Medical Radiology and radiation safety</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Medical Radiology and radiation safety</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Медицинская радиология и радиационная безопасность</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">1024-6177</issn>
   <issn publication-format="online">2618-9615</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">26786</article-id>
   <article-id pub-id-type="doi">10.12737/article_5c55fb4d218e20.76419134</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Радиационная физика, техника и дозиметрия</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Radiation physics, technology and dosimetry</subject>
    </subj-group>
    <subj-group>
     <subject>Радиационная физика, техника и дозиметрия</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Research of 131Cs Radionuclide Production for Brachytherapy with Photonuclear Method</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Исследование возможности получения радионуклида 131Cs  для брахитерапии фотоядерным способом</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Белоусов</surname>
       <given-names>А. В.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Belousov</surname>
       <given-names>A. V.</given-names>
      </name>
     </name-alternatives>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Желтоножская</surname>
       <given-names>М. В.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Zheltonozhskaya</surname>
       <given-names>M. V.</given-names>
      </name>
     </name-alternatives>
     <bio xml:lang="ru">
      <p>кандидат технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.V. Lomonosov Moscow State University</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.V. Lomonosov Moscow State University</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М.В. Ломоносова</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.V. Lomonosov Moscow State University</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <volume>64</volume>
   <issue>1</issue>
   <fpage>53</fpage>
   <lpage>57</lpage>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/26786/view">https://zh-szf.ru/en/nauka/article/26786/view</self-uri>
   <abstract xml:lang="ru">
    <p>Цель: Исследование возможности получения 131Cs в реакции (γ, 2n) на пучках тормозных фотонов, получаемых на ускорителе электронов путем облучения природного цезия, состоящего из единственного стабильного нуклида 133Cs.&#13;
Материал и методы: Проведено облучение мишени природного цезия на импульсном разрезном микротроне НИИЯФ МГУ с энергией электронов 55 МэВ, средним током 40–45 нА в течение 80 мин. После экспозиции гамма-излучение мишени измерялось на полупроводником спектрометре Canberra с детектором из сверхчистого германия большого объема.&#13;
Результаты: Активность в облученном образце 131Cs оказалась равной 8,1 ±1,0 мкКи на момент окончания облучения. &#13;
Заключение: При брахитерапии для курса лечения пациента обычно применяют от 10 до 60 микроисточников. Активность одного терапевтического микроисточника131Cs составляет порядка 10–3 Ки, наработка требуемого количества становится возможной при использовании ускорителей электронов с токами порядка 50 мкА.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Purpose: Currently a brachytherapy method with 125I received widespread acceptance in the treatment of prostate cancer. However, since 2003, 131Cs radio-implants have been approved for clinical use in the treatment of this type of cancer. To investigate alternative 131Cs receiving channels using electron accelerators and to evaluate the effectiveness of this method for its use in brachytherapy.&#13;
Material and methods: To study alternative channels for the 131Cs production using electron accelerators and to evaluate the efficiency of this method, we irradiated the natural cesium target (0.35 g) on a pulsed microtron with an electron energy of 55 MeV, an average amperage of 40–45 nA during 80 min.&#13;
Results: The 131Cs activity in the irradiated sample was 12.2 ± 1.0 μCi at the end of irradiation. &#13;
Conclusion: In brachytherapy, 10 to 60 micro-sources are usually used to treat a patient. The activity of one therapeutic micro source is 131Cs of the order of 10–3 Ci. Thus, the development of the required amount becomes possible when using electron accelerators with currents of the order of 50 mA. In the future it is also necessary to investigate 131Cs in the electron energy range 30–45 MeV for choosing the optimal irradiation regime.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>медицинская физика</kwd>
    <kwd>брахитерапия</kwd>
    <kwd>активация</kwd>
    <kwd>ускорители электронов</kwd>
    <kwd>фотоядерные реакции</kwd>
    <kwd>131Cs</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>medical physics</kwd>
    <kwd>brachytherapy</kwd>
    <kwd>activation</kwd>
    <kwd>electron accelerators</kwd>
    <kwd>photonuclear reactions</kwd>
    <kwd>131Cs</kwd>
   </kwd-group>
  </article-meta>
 </front>
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</article>
