<?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>2709-7927</journal-id>
<journal-title><![CDATA[Acta Médica del Centro]]></journal-title>
<abbrev-journal-title><![CDATA[Acta méd centro]]></abbrev-journal-title>
<issn>2709-7927</issn>
<publisher>
<publisher-name><![CDATA[Hospital Provincial Clínico Quirúrgico Universitario Arnaldo Milián Castro]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2709-79272023000200374</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Contrastes en resonancia: del lineal al macrocíclico]]></article-title>
<article-title xml:lang="en"><![CDATA[Contrasts in resonance: from linear to macrocyclic]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Monteagudo]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfonso Hidalgo]]></surname>
<given-names><![CDATA[Anayda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Clínica Central &#8220;Cira García&#8221;  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Facultad de Ciencias Médicas &#8220;Dr. Salvador Allende&#8221;  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>17</volume>
<numero>2</numero>
<fpage>374</fpage>
<lpage>381</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2709-79272023000200374&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2709-79272023000200374&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2709-79272023000200374&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  el empleo de medios de contraste en resonancia magnética es una necesidad, para obtener una imagen más efectiva se debe usar el contraste más ideal para minimizar las reacciones adversas y el depósito en los tejidos y en los órganos diana. Debido al uso reiterado de estos contrastes en pacientes con seguimiento oncológico de tumores cerebrales se han observado depósitos del contraste en el cerebro.  Objetivo:  estudiar las características de los medios de contraste basados en el gadolinio y su uso en resonancia magnética.  Métodos:  se realizó una revisión documental, se emplearon métodos teóricos para los referentes teóricos del tema, la interpretación de la revisión documental y la progresión de la información en los artículos.  Resultados:  la toxicidad de los medios de contraste basados en el gadolinio depende de varios factores y la aparición de reacciones adversas leves y graves con su uso se pueden evitar.  Conclusiones:  se debe valorar, para el uso de los medios de contraste basados en el gadolinio, la relación beneficio/riesgo, esta premisa debe coincidir con la necesidad real de un diagnóstico y un pronóstico (o ambos) efectivos. El objetivo es administrar la menor dosis posible, que se relacione con el tiempo de realce máximo efectivo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  the use of magnetic resonance contrast media is a necessity. In order to obtain a more effective image, the most ideal contrast should be used to minimize adverse reactions and deposition in tissues and target organs. Due to the repeated use of these contrasts in patients with oncologic follow-up of brain tumors, contrast deposits have been observed in the brain.  Objective:  to study the characteristics of gadolinium-based contrast media and their use in magnetic resonance imaging.  Methods:  a documentary review was carried out, theoretical methods were used for the theoretical references of the subject, the interpretation of the documentary review and the progression of the information in the articles.  Results:  the toxicity of gadolinium-based contrast media depends on several factors and the occurrence of mild and severe adverse reactions with their use can be avoided.  Conclusions:  for the use of gadolinium-based contrast media, the benefit/risk ratio should be assessed, this premise should coincide with the real need for an effective diagnosis and prognosis (or both). The objective is to administer the lowest possible dose, which is related to the maximum effective enhancement time.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[medios de contraste]]></kwd>
<kwd lng="es"><![CDATA[gadolinio]]></kwd>
<kwd lng="es"><![CDATA[espectroscopía de resonancia magnética]]></kwd>
<kwd lng="en"><![CDATA[contrast media]]></kwd>
<kwd lng="en"><![CDATA[gadolinium]]></kwd>
<kwd lng="en"><![CDATA[magnetic resonance spectroscopy]]></kwd>
</kwd-group>
</article-meta>
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