<?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>2227-1899</journal-id>
<journal-title><![CDATA[Revista Cubana de Ciencias Informáticas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev cuba cienc informat]]></abbrev-journal-title>
<issn>2227-1899</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ediciones Futuro]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2227-18992022000100017</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reducción del ruido en imágenes SPECT utilizando el método DCRG-PPXA de Variación Total]]></article-title>
<article-title xml:lang="en"><![CDATA[Noise reduction in SPECT images using the DCRG-PPXA method of Total Variation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ybargollin-Machado]]></surname>
<given-names><![CDATA[Sergio E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Díaz]]></surname>
<given-names><![CDATA[Marlen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco-Morales]]></surname>
<given-names><![CDATA[Rubén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Roque-Díaz]]></surname>
<given-names><![CDATA[Reinaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de las Villas Facultad de Ing Eléctrica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario Celestino Hernández Robau  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2022</year>
</pub-date>
<volume>16</volume>
<numero>1</numero>
<fpage>17</fpage>
<lpage>29</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2227-18992022000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2227-18992022000100017&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2227-18992022000100017&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La calidad de la imagen y los diagnósticos médicos se ven afectados por la presencia del ruido. En esta investigación se presenta un método basado en variación total para la reducción del ruido en imágenes SPECT. Para el estudio se utilizó el maniquí de Jaszczak del cual se obtuvieron cortes tomográficos que fueron procesados por el método. Para comprobar la calidad de las imágenes obtenidas se emplearon métricas objetivas de calidad de imagen (SNR, C, CNR y MTF). Se obtuvo que DCRG-PPXA reduce ruido en las imágenes conservando un alto contraste y resolución espacial, logrando una buena relación de compromiso con la cantidad de ruido eliminada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT It is necessary to continue research in the field of noise reduction in Single Photon Emission Computed Tomography (SPECT) images. Image quality and medical diagnoses are affected by the presence of noise. In this investigation a method based on total variation for noise reduction in SPECT images is presented. For the study, the Jaszczak phantom was used for the tomographic sections and the processing of the method. Objective image quality metrics were used to check the quality of the images obtained (SNR, C, CNR and MTF). It was obtained that DCRG-PPXA reduces noise in the images while preserving a high contrast and spatial resolution, achieving a good compromise relationship with the amount of noise eliminated.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[SPECT]]></kwd>
<kwd lng="es"><![CDATA[ruido]]></kwd>
<kwd lng="es"><![CDATA[calidad de imagen]]></kwd>
<kwd lng="es"><![CDATA[variación total]]></kwd>
<kwd lng="en"><![CDATA[SPECT]]></kwd>
<kwd lng="en"><![CDATA[noise]]></kwd>
<kwd lng="en"><![CDATA[image quality]]></kwd>
<kwd lng="en"><![CDATA[total variation]]></kwd>
</kwd-group>
</article-meta>
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