Estadísticas

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    "titulo" => "Resonancia magnética de la articulación sacroilíaca normal y en los pacientes con sacroileítis"
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        "resumen" => "<span class="elsevierStyleBold">Objetivo&#58;</span> Describir la articulaci&#243;n sacroil&#237;aca normal en im&#225;genes obtenidas por resonancia magn&#233;tica &#40;RM&#41;&#44; e identificar las anomal&#237;as en los pacientes con espondilitis anquilosante &#40;EA&#41; o con sospecha de padecer dicha enfermedad&#46; Determinar la sensibilidad diagn&#243;stica de la RM frente a la radiograf&#237;a&#46; <br/> <br/> <br/> <br/> <span class="elsevierStyleBold">Material y m&#233;todo&#58;</span> Se estudiaron 12 individuos sanos y 31 pacientes&#46; A todos se les realizaron una radiograf&#237;a anteroposterior de la pelvis y un estudio por RM&#44; obteniendo 2 secuencias coronales con t&#233;cnica spin-eco potenciada en T1 y eco de gradiente potenciado en T2&#44; y 2 secuencias transversales spin-eco potenciadas en T2&#46; Las radiograf&#237;as fueron clasificadas entre 0 y 4 de acuerdo con los criterios de Nueva York modificados&#46; <br/> <br/> <br/> <br/> <span class="elsevierStyleBold">Resultados&#58;</span> La RM detect&#243; m&#225;s anomal&#237;as que la radiograf&#237;a simple&#46; &#201;stas incluyen cambios en la intensidad de se&#241;al del cart&#237;lago &#40;el 87&#37; de las articulaciones&#41;&#44; p&#233;rdida de definici&#243;n de m&#225;rgenes &#40;el 81&#37; de las articulaciones&#41;&#44; erosiones &#40;el 71&#37; de las articulaciones&#41;&#44; esclerosis subcondral &#40;el 69&#37; de las articulaciones&#41;&#44; puentes &#243;seos &#40;el 21&#37; de las articulaciones&#41; y anquilosis &#40;el 23&#37; de las articulaciones&#41;&#59; en la m&#233;dula &#243;sea han sido detectadas 2 alteraciones&#58; el infiltrado graso &#40;el 68&#37; de las articulaciones&#41; y el edema inflamatorio &#40;el 2&#37; de las articulaciones&#41;&#46; La RM fue m&#225;s sensible que la radiograf&#237;a en la detecci&#243;n de erosiones &#40;p &#60; 0&#44;001&#41; y en la visualizaci&#243;n de la p&#233;rdida de los m&#225;rgenes articulares &#40;p &#60; 0&#44;001&#41;&#46; <br/> <br/> <br/> <br/> <span class="elsevierStyleBold">Conclusi&#243;n&#58;</span> La RM demuestra los elementos anat&#243;micos de la articulaci&#243;n sacroil&#237;aca&#44; destacando como un m&#233;todo valioso para conocer el grado de sacroile&#237;tis en la EA y para detectar alteraciones en fases tempranas de la enfermedad con radiograf&#237;a negativa&#46;"
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        "resumen" => "<span class="elsevierStyleBold">Objective&#58;</span> To describe the appearance of the normal sacroiliac joint in magnetic resonance &#40;MR&#41; imaging&#44; and the abnormalities in patients with known or clinically suspected ankylosing spondylitis &#40;AS&#41;&#46; The results were compared with findings obtained by conventional radiography&#44; and diagnostic sensitivities were determined in both techniques&#46; <br/> <br/> <br/> <br/> <span class="elsevierStyleBold">Material and methods&#58;</span> Twelve volunteers and 31 patients were studied&#46; Anteroposterior pelvic conventional radiographs&#44; in addition to coronal T1 weighted spin-echo and T2&#42; weighted gradient images&#44; and transverse in proton density and T2 weighted spin-echo are the techniques which were performed&#46; All plain films were graded from 0 to 4 according to the modified New York criteria &#40;NY&#41;&#46; <br/> <br/> <br/> <br/> <span class="elsevierStyleBold">Results&#58;</span> MR imaging detected a greater number of abnormalities&#46; These included abnormal cartilage signal intensity &#40;87&#37; of joints&#41;&#44; loss of articular margin definition &#40;81&#37; of joints&#41;&#44; erosions &#40;71&#37; of joints&#41;&#44; subchondral sclerosis &#40;69&#37; of joints&#41;&#44; bony bridges &#40;21&#37; of joints&#41; and ankylosis &#40;22&#46;6&#37; of joints&#41;&#59; in the bone marrow two changes were detected&#58; fatty infiltration &#40;68&#37; of joints&#41; and inflammatory oedema &#40;2&#37; of joints&#41;&#46; MR imaging was significantly more sensitive than conventional radiography in detecting erosions &#40;p &#60; 0&#46;001&#41; and loss of articular margin definition &#40;p &#60; 0&#46;001&#41;&#46; <br/> <br/> <br/> <br/> <span class="elsevierStyleBold">Conclusion&#58;</span> Our study showed that anatomical elements from the sacroiliac joint were well depicted by MR imaging&#46; It is a valuable method to establish the grade of sacroiliitis in AS it may be useful in patients with early stages of the disease&#46;"
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