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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Russian Journal of Biological Physics and Chemisrty</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Russian Journal of Biological Physics and Chemisrty</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2499-9962</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">54673</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>МЕДИЦИНСКАЯ БИОФИЗИКА И БИОФИЗИЧЕСКАЯ ХИМИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>MEDICAL BIOPHYSICS AND BIOPHYSICAL CHEMISTRY</subject>
    </subj-group>
    <subj-group>
     <subject>МЕДИЦИНСКАЯ БИОФИЗИКА И БИОФИЗИЧЕСКАЯ ХИМИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">High frequency sonography of the cardiovascular system in the early development of the lower vertebrates</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Высокочастотная сонография сердечно сосудистой системы в раннем развитии низших позвоночных</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Бурлаков</surname>
       <given-names>А Б</given-names>
      </name>
      <name xml:lang="en">
       <surname>Burlakov</surname>
       <given-names>A B</given-names>
      </name>
     </name-alternatives>
     <email>burlakovao@mail.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Титов</surname>
       <given-names>С А</given-names>
      </name>
      <name xml:lang="en">
       <surname>Titov</surname>
       <given-names>S A</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Зыкова</surname>
       <given-names>Л А</given-names>
      </name>
      <name xml:lang="en">
       <surname>Zykova</surname>
       <given-names>L A</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Научно-технологический центр уникального приборостроения РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Scientific and Technological Center of Unique Instrumentation of RAS</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Научно-технологический центр уникального приборостроения РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Scientific and Technological Center of Unique Instrumentation of RAS</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Научно-технологический центр уникального приборостроения РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Scientific and Technological Center of Unique Instrumentation of RAS</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2021-09-25T20:22:29+03:00">
    <day>25</day>
    <month>09</month>
    <year>2021</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2021-09-25T20:22:29+03:00">
    <day>25</day>
    <month>09</month>
    <year>2021</year>
   </pub-date>
   <volume>6</volume>
   <issue>3</issue>
   <fpage>454</fpage>
   <lpage>459</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-09-20T20:22:29+03:00">
     <day>20</day>
     <month>09</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-09-20T20:22:29+03:00">
     <day>20</day>
     <month>09</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54673/view">https://rusjbpc.ru/en/nauka/article/54673/view</self-uri>
   <abstract xml:lang="ru">
    <p>В работе описана методика высокочастотного ультразвукового исследования in vivo сердечно сосудистой системы низших позвоночных на ранних стадиях их развития. Основой экспериментальной установки, используемой в исследованиях, является сканирующий акустический микроскоп с пространственным разрешением 20 мкм, совмещенный с оптическим инвертированным микроскопом. Показано, что пространственная и временная разрешающие способности сонографического модуля являются достаточными для визуализации структуры сердца и регистрации движения его компонентов. Экспериментальные работы выполнены на особях Misgurnus fossilis и Danio rerio , находящихся на предличиночной стадии развития. Исследуемые организмы после иммобилизации помещалась в иммерсионную ячейку сонографического модуля, а ультразвуковые данные записывалась в зависимости от пространственных координат и времени. Полученные ультразвуковые сканы отчетливо показывают структурные элементы сердца, на них различаются отражения ультразвуковых сигналов от стенок сердца и элементов крови. В сканах выявляется периодичность ультразвукового пространственно-временного сигнала по временной переменной, соответствующая ритму сердечной деятельности. Продемонстрировано, что по выделенным ультразвуковым сигналам можно определить траекторию движения стенок сердца в различных его областях, а также проводить измерения скорости кровотока. Найдено, что вертикальная компонента скорости элементов крови составляет примерно 0,8 и 0,08 мм/с во время систолы и в паузе, соответственно.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper describes the technique of high-frequency ultrasound examination in vivo of the cardiovascular system of lower vertebrates at the early stages of their development. The basis of the experimental setup used in the research is a scanning acoustic microscope with a spatial resolution of 20 μm, combined with an optical inverted microscope. It is shown that the spatial and temporal resolution of the sonographic module is sufficient for visualizing the structure of the heart and recording the movement of its components. Experimental work was carried out on individuals of Misgurnus fossilis and Danio rerio at the larval stage of development. The studied organisms after immobilization were placed in the immersion cell of the sonographic module, and the ultrasound data was recorded depending on the spatial coordinates and time. The received ultrasound scans clearly show the structural elements of the heart, they differ in the reflections of ultrasound signals from the walls of the heart and blood elements. The scans reveal the frequency of the ultrasonic spatio-temporal signal in terms of the temporal variable, which corresponds to the rhythm of cardiac activity. It has been demonstrated that the selected ultrasound signals can be used to determine the trajectory of the heart walls in its various regions, as well as to measure the blood flow velocity. It was found that the vertical component of the velocity of blood elements is approximately 0.8 and 0.08 mm / s during systole and in pause, respectively.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>низшие позвоночные</kwd>
    <kwd>сердечно сосудистая система</kwd>
    <kwd>сонография</kwd>
    <kwd>сканирующий акустический микроскоп</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>lower vertebrates</kwd>
    <kwd>cardiovascular system</kwd>
    <kwd>sonography</kwd>
    <kwd>scanning acoustic microscope</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Минобрнауки России в рамках Государственного задания № 0069-2019-0009.</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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