TC helicoidal del sector vascular aortoilíaco: optimación del retraso en la adquisición mediante el método del bolo de prueba*
Helical computed tomography of the aortoiliac vessels: optimization of the scan delay using the test bolus method
Luis Concepción†
, Luis Martí-Bonmatí, Roberto Aliaga, Fructuoso Delgado, Aurelio Igual
Autor para correspondencia
lu.concepciona@coma.es
Correspondencia:LUIS CONCEPCIÓN ARAMENDÍA. Avda. Salamanca, 13-4.oA 03005 Alicante.
Correspondencia:LUIS CONCEPCIÓN ARAMENDÍA. Avda. Salamanca, 13-4.oA 03005 Alicante.
Servicio de Radiodiagnóstico. Hospital Universitario «Dr. Peset». Valencia.
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Hospital Universitario «Dr. Peset». Valencia." ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "†" "correspondencia" => "Correspondencia:LUIS CONCEPCIÓN ARAMENDÍA. Avda. Salamanca, 13-4.<span class="elsevierStyleSup">o</span>A 03005 Alicante." ] ] ] ] "titulosAlternativos" => array:1 [ "en" => array:1 [ "titulo" => "Helical computed tomography of the aortoiliac vessels: optimization of the scan delay using the test bolus method" ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2000-12-29" "fechaAceptado" => "2001-02-15" "PalabrasClave" => array:2 [ "es" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Palabras clave" "identificador" => "xpalclavsec226983" "palabras" => array:4 [ 0 => "Tomografía computarizada helicoidal" 1 => "Tomografía computarizada" 2 => "Angiografía" 3 => "Aorta abdominal" ] ] ] "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Key words" "identificador" => "xpalclavsec226984" "palabras" => array:4 [ 0 => "Helical computed tomography" 1 => "Computed tomography" 2 => "angiography" 3 => "Abdominal aorta" ] ] ] ] "tieneResumen" => true "resumen" => array:2 [ "es" => array:2 [ "titulo" => "Resumen" "resumen" => "<span class="elsevierStyleSectionTitle">Objetivos</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Optimar el tiempo de retraso en la adquisición de estu-dios de tomografía computarizada (TC) helicoidal del sector vascular aortoilíaco utilizando el método del bolo de prueba.</p> <span class="elsevierStyleSectionTitle">Material y Métodos</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Se estudiaron 90 pacientes consecutivos remi-tidos para evaluación del sector vascular aortoilíaco. En todos se calcu-ló el tiempo de llegada del contraste a la aorta (T<span class="elsevierStyleSup">0</span>pico) de acuerdo con un protocolo predefinido utilizando el método del bolo de prueba, apli-cándose distintos retrasos en la adquisición de la hélice. Se midieron los valores de atenuación en tres zonas de la aorta abdominal de todos los pacientes. Los resultados de captación por zonas y tiempos de re-traso se compararon mediante la prueba ANOVA y Student-Newman-Keuls. El nivel de significación se fijó en p < 0,05.</p> <span class="elsevierStyleSectionTitle">Resultados:</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">El tiempo medio de llegada del contraste fue de 22,3 segundos (intervalo, 13-40). La captación media para las regiones ini-cial, central y distal de la aorta fue de 231, 260, y 254 UH en los gru-pos con retraso de T<span class="elsevierStyleSup">0</span>pico +5 segundos; de 275, 287 y 287 UH para un retraso de T<span class="elsevierStyleSup">0</span>pico + 10 segundos; y de 266, 259 y 276 UH para un re-traso de T<span class="elsevierStyleSup">0</span>pico + 15 segundos, respectivamente.</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">La aplicación del método del bolo de prueba en la optimación de la captación intravascular en el sector vascular aortoilía-co permite lograr un elevado grado de realce. Cuando se utiliza un re-traso de T<span class="elsevierStyleSup">0</span>pico + 10 segundos la opacificación vascular es homogénea en toda la aorta abdominal y mayor que con otras formulaciones.</p>" ] "en" => array:2 [ "titulo" => "Abstract" "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">To optimize the length of the scan delay in helical computed tomography (CT) studies of the aortoiliac vessels using the test bolus method.</p> <span class="elsevierStyleSectionTitle">Material and methods</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">We studied 90 consecutive patients referred to us for examination of the aortoiliac vessels. The time it took for the contrast to reach te aorta (rise time) was calculated in each patient in agreement with a previously defined protocol involving the use of a test bolus and applying different scan delays. The attenuation values were measured in three portions of abdominal aorta in all the patients. The uptake in the different portions for each dealy time were compared by ANOVA and the Student-Newman-Keuls test with the significance level set at p < 0.05.</p> <span class="elsevierStyleSectionTitle">Results</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">The mean rise time was 22.3 seconds (range: 13 to 40 seconds). The mean uptake for the proximal, central and distal portions of aorta were 231, 260 and 254 UH in the groups with a delay of 5 seconds over the rise time; 2,75, 287 and 287 UH for delays of 10 seconds; and 266, 259 and 276 UH for delays of 15 seconds, respectively.</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">The application of the test bolus method to optimize uptake in the aortoiliac vessels results in a high degree of enhancement. A delay of 10 seconds over the rise time produced the greatest degree of vascular opacification, which was homogeneous throughout the entire abdominal aorta.</p>" ] ] "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "*" "nota" => "<p class="elsevierStyleNotepara">Concepción L, Martí-Bonmatí L, Aliaga R, et al. TC helicoidal del sector vascular aortoilíaco: optimación del retraso en la adquisición mediante el método del bolo de prueba. Radiología 2001;43(2):69-74.</p>" ] ] "bibliografia" => array:2 [ "titulo" => "Bibliografía" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:23 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1." "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Imaging of abdominal aortic aneurysms" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:6 [ 0 => "L. LaRoy" 1 => "P. Cormier" 2 => "S. Matalon" 3 => "S. Patel" 4 => "D. 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| 2013 Enero | 9 | 0 | 9 |
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| 2001 Febrero | 616 | 0 | 616 |
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