<?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>0188-6266</journal-id>
<journal-title><![CDATA[Acta universitaria]]></journal-title>
<abbrev-journal-title><![CDATA[Acta univ]]></abbrev-journal-title>
<issn>0188-6266</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Guanajuato, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-62662024000100153</article-id>
<article-id pub-id-type="doi">10.15174/au.2024.4167</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Desarrollo de un protocolo de control de calidad para el sistema de imagen Brainlab Exactrac]]></article-title>
<article-title xml:lang="en"><![CDATA[Development of a quality control protocol for the Brainlab Exactrac imaging system]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes Chambergo]]></surname>
<given-names><![CDATA[Giuliana Marisol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas Campos]]></surname>
<given-names><![CDATA[Jorge Isaac]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Costa Rica Facultad de Ciencias Exactas y Naturales ]]></institution>
<addr-line><![CDATA[San José ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>34</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-62662024000100153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-62662024000100153&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-62662024000100153&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo del trabajo fue implementar pruebas para el control de calidad del sistema Exactrac, las cuales tienen en cuenta la verificación y corrección del posicionamiento mediante la calibración del isocentro, permitiendo que Exactrac identifique la alineación geométrica del acelerador con respecto a las cámaras infrarrojas; además, empleando un fantoma con esferas insertadas, se podrá analizar la precisión para detectarlas. El informe del grupo del trabajo TG 75 recomienda medir la calidad del haz y la dosis de imagen para el sistema de imagen plana de kilovoltage (KV). Los resultados de la desviación del isocentro y la calibración de rayos X fueron &#8804;1.0 mm. La diferencia del kilovoltaje de los tubos de rayos X fue 2.5%. La dosis para la técnica de cráneo superior fue 0.326 mGy, en conformidad con la dosis reportada en AAPM TG 75, y 0.335 mGy para la técnica cráneo/espina cervical.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective was to implement tests for the quality control of the Exactrac system, which consider the verification and correction of the positioning through the calibration of the isocenter, allowing Exactrac to identify the geometric alignment of the accelerator with respect to the infrared cameras; in addition, using a phantom with spheres inserted will enable the analysis of the accuracy to detect them. The task group TG 75 recommends to measure beam quality and imaging dose for the kilovoltage (KV) planar imaging system. The results of the isocenter deviation and X-ray calibration were &#8804;1.0 mm. The difference in the kilovoltage of the X-ray tubes was 2.5%. The dose for the upper skull technique was 0.326 mGy, in accordance with the dose reported in AAPM TG 75, and 0.335 mGy for skull/cervical spine protocols.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Radioterapia guiada por imágenes (IGRT)]]></kwd>
<kwd lng="es"><![CDATA[Brainlab Exactrac]]></kwd>
<kwd lng="es"><![CDATA[control de calidad]]></kwd>
<kwd lng="en"><![CDATA[Image guided radiotherapy (IGRT)]]></kwd>
<kwd lng="en"><![CDATA[Brainlab Exactrac]]></kwd>
<kwd lng="en"><![CDATA[quality control]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="">
<collab>Brainlab AG Germany</collab>
<source><![CDATA[Manual del Usuario]]></source>
<year>2019</year>
<volume>1/2</volume>
<edition>1.2</edition>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Da Silva]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Reiner]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Reitz]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Straub]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Corradini]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Niyazi]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Belka]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Kurz]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Landry]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Freislederer]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Exactrac Dynamic workflow evaluation: combined surface optical/termal imaging and X-ray positioning]]></article-title>
<source><![CDATA[Journal of Applied Clinical Medical Physics]]></source>
<year>2022</year>
<volume>23</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1-16</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhao]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Wen]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Chetty]]></surname>
<given-names><![CDATA[I. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Siddiqui]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Targeting accuracy at couch kick for a frameless image guided radiosurgery system]]></article-title>
<source><![CDATA[Journal of Radiosurgery and SBRT]]></source>
<year>2018</year>
<volume>5</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>123-9</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Iftimia]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Halvrsen]]></surname>
<given-names><![CDATA[P. H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development of clinically relevant QA procedures for the Brainlab Exactrac imaging system]]></article-title>
<source><![CDATA[Journal of Applied Clinical Medical Physics]]></source>
<year>2017</year>
<volume>19</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>108-13</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Klein]]></surname>
<given-names><![CDATA[E. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Hanley]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Bayouth]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Yin]]></surname>
<given-names><![CDATA[F. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Simon]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Dresser]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Serago]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Aguirre]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ma]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Arjomandy]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Sandin]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Holmes]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Task Group 142 report: quality assurance of medical accelerators]]></article-title>
<source><![CDATA[Medical Physics]]></source>
<year>2009</year>
<volume>36</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>4197-212</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Luh]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Alburqueque]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Cheng]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Ermonian]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Nabavizadeh]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Parsai]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Roeske]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Weis]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Wynn]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Rosenthal]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Hartford]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[ACR-ASTRO Practice parameter for image-guided radiation therapy (IGRT)]]></article-title>
<source><![CDATA[American Journal of Clinical Oncology]]></source>
<year>2020</year>
<volume>43</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>459-68</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Meilij]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Aon]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Valente]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Metodología para definir esquemas de irradiación a partir de espacios de fase para simular planificación en radioterapia]]></article-title>
<source><![CDATA[Anales AFA]]></source>
<year>2022</year>
<volume>33</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>48-53</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Murphy]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Balter]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Balter]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Bencomo]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Das]]></surname>
<given-names><![CDATA[I. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Jiang]]></surname>
<given-names><![CDATA[S. B. Ma. C.]]></given-names>
</name>
<name>
<surname><![CDATA[Olivera]]></surname>
<given-names><![CDATA[G. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodebaugh]]></surname>
<given-names><![CDATA[R. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruchala]]></surname>
<given-names><![CDATA[K. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Shirato]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Yin]]></surname>
<given-names><![CDATA[F. F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The management of imaging dose during image-guided radiotherapy: report of the AAPM Task Group 75]]></article-title>
<source><![CDATA[Medical Physics]]></source>
<year>2007</year>
<volume>34</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>4041-63</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="">
<collab>Sociedad Española de Física Medica</collab>
<source><![CDATA[Recomendaciones para el control de calidad de equipos y técnicas de radioterapia guiada por la imagen (IGRT)]]></source>
<year>2013</year>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Stanley]]></surname>
<given-names><![CDATA[D. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Papanikolaou]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Gutierrez]]></surname>
<given-names><![CDATA[A. N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development of image quality assurance measures of the Exactrac localization system using commercially available image evaluation software and hardware for image-guided radiotherapy]]></article-title>
<source><![CDATA[Journal of Applied Clinical Medical Physics]]></source>
<year>2014</year>
<volume>15</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>81-91</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[L. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Solberg]]></surname>
<given-names><![CDATA[T. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Medin]]></surname>
<given-names><![CDATA[P. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Boone]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Infrared patient positioning for stereotactic radiosurgery of extracranial tumor]]></article-title>
<source><![CDATA[Computers in Biology and Medicine]]></source>
<year>2001</year>
<volume>31</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>101-11</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
