<?xml version="1.0" encoding="ISO-8859-1"?><article 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">
<front>
<journal-meta>
<journal-id>0188-9532</journal-id>
<journal-title><![CDATA[Revista mexicana de ingeniería biomédica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. ing. bioméd]]></abbrev-journal-title>
<issn>0188-9532</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Ingeniería Biomédica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-95322021000300103</article-id>
<article-id pub-id-type="doi">10.17488/rmib.42.3.4</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Shielding Volume Reduction in a High Dose Rate Brachytherapy Room]]></article-title>
<article-title xml:lang="es"><![CDATA[Reducción de Volumen de Blindaje en una Sala de Braquiterapia de Alta Tasa de Dosis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Guzmán]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montenegro-Monroy]]></surname>
<given-names><![CDATA[H. M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Honorato]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Flores]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda-Suárez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de México  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto de Seguridad Social del Estado de México y Municipios Centro Oncológico Estatal ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto de Seguridad Social del Estado de México y Municipios Dirección de Gestión y Control ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>42</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-95322021000300103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-95322021000300103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-95322021000300103&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This paper describes a method to reduce the shielding thickness in a high dose brachytherapy treatment room, with an Iridium-192 source, using the protocols established by the International Atomic Energy Agency in its Safety Report No. 47; calculating the volume of shielding material, without failing to comply with the radiation safety parameters established by the General Radiation Safety Regulations and regulations in force by the Comisión Nacional de Seguridad Nuclear y Salvaguardias, which acts as the regulatory body for the use of radioactive sources in Mexico. The shielding of the walls was determined as a function of room design, source activity, workload, use factor, number of weekly treatments, treatment time, and shielding material properties. The results show that the shielding volume can be reduced by 19.592% and 20.727% for five-point and eleven-point fractionation, respectively, for a Brachytherapy room with a maze.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El presente trabajo describe un método para reducir el grosor de blindaje en una sala de tratamiento de Braquiterapia de alta dosis con fuente de Iridio-192, utilizando los protocolos establecidos por el Organismo Internacional de Energía Atómica en su Informe de Seguridad No. 47; calculando el volumen de material de blindaje, sin incum plir con los parámetros de seguridad radiológica que establece el Reglamento General de Seguridad Radiológica y normatividad vigente por la Comisión Nacional de Seguridad Nuclear y Salvaguardias, quien funge como órgano regulador para el uso de fuentes radiactivas en México. Por lo que se determinó el grosor de las paredes en función al diseño de la sala, ubicación y actividad total de la fuente, así como, factor de ocupación en áreas adyacentes car ga de trabajo, factor de uso, número de tratamientos semanales, tiempo promedio de tratamiento y propiedades del material de blindaje. Mediante estos cálculos, se determinó que el volumen de blindaje se puede reducir un 19.592% y 20.727% para el fraccionamiento en cinco y once puntos, respectivamente, para una sala de Braquiterapia con laberinto.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Shielding]]></kwd>
<kwd lng="en"><![CDATA[Brachytherapy]]></kwd>
<kwd lng="en"><![CDATA[Radiation Protection]]></kwd>
<kwd lng="es"><![CDATA[Blindaje]]></kwd>
<kwd lng="es"><![CDATA[Braquiterapi]]></kwd>
<kwd lng="es"><![CDATA[Protección Radiológica]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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