<?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>2524-177X</journal-id>
<journal-title><![CDATA[Revista médica del Hospital General de México]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. med. Hosp. Gen. Méx.]]></abbrev-journal-title>
<issn>2524-177X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Médica del Hospital General de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2524-177X2022000400179</article-id>
<article-id pub-id-type="doi">10.24875/hgmx.22000021</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Helical tomotherapy: advanced radiotherapy technology]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escobar-Peralta]]></surname>
<given-names><![CDATA[Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gil-García]]></surname>
<given-names><![CDATA[Rebeca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quezada-Bautista]]></surname>
<given-names><![CDATA[Abril A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Riverol]]></surname>
<given-names><![CDATA[Otoniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de Seguridad y Servicios Sociales para los Trabajadores del Estado Centro Médico Nacional 20 de Noviembre Department of Radiotherapy]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Juárez de México Department of Radiotherapy ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>85</volume>
<numero>4</numero>
<fpage>179</fpage>
<lpage>184</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2524-177X2022000400179&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2524-177X2022000400179&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2524-177X2022000400179&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Nowadays, technology has evolved considerably, and has made radiotherapy a sophisticated treatment due to it use high-precision equipment and advanced imaging techniques that guarantee an exact treatment that is reflected in the control of the disease with decrease in the toxicity that was previously present, and this is important because 60-70% of cancer patients will require this treatment at some point in the evolution of the disease. Among the new equipment to provide radiotherapy, there is the helical tomotherapy, which is a linear accelerator with many dosimetric advantages for the administration of treatment. To carry out this procedure, a series of steps are required from the assessment consultation by the radiation oncologist until the end of the treatment.]]></p></abstract>
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<kwd lng="en"><![CDATA[Tomotherapy]]></kwd>
<kwd lng="en"><![CDATA[Oncology]]></kwd>
<kwd lng="en"><![CDATA[Hypofractionated radiation therapy]]></kwd>
</kwd-group>
</article-meta>
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