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Vol. 53. Issue 4.
Pages 326-334 (July - August 2011)
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Vol. 53. Issue 4.
Pages 326-334 (July - August 2011)
Update in Radiology
Evidence-based radiology for diagnostic imaging: What it is and how to practice it
Radiología basada en la evidencia en el diagnóstico por imagen: ¿qué es y cómo se practica?
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C. García Villar
Unidad Clínica de Radiodiagnóstico, Hospital Universitario Puerta del Mar, Cádiz, Spain
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Table 1. Classification of levels of evidence and grades of recommendation for diagnostic studies according to Oxford's CEBM.
Table 2. Formulae necessary to interpret a diagnostic test.
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Abstract

Evidence-based radiology is defined as the decision that results from integrating clinical information to select the most appropriate imaging test on the basis of the best available evidence, the physician's experience, and the patient's expectations. The practice of evidence-based radiology consists of five steps: formulating the question, performing an efficient search of the literature, critically evaluating the literature, applying the results of the search and evaluation while taking into account our experience and the patient's values, and evaluating the results obtained within our own practice. In diagnostic imaging, the number of resources available for evidence-based radiology is increasing: apart from books, articles, and web pages on this subject, evidence-based radiology is receiving more attention at diagnostic imaging conferences. The principles of evidence-based radiology will help promote the appropriate use of resources, greatly benefiting patients (decreasing the use of examinations that use ionizing radiation), professionals (less overload), and managers (more efficient use of resources).

Keywords:
Evidence-based medicine
Evidence-based radiology
Diagnostic imaging
ACR criteria
ALARA
Resumen

La Radiología Basada en la Evidencia (RBE), se define como la decisión que resulta de integrar la clínica con la prueba de imagen más adecuada en base a la mejor evidencia disponible, la experiencia del médico y las expectativas del paciente. Su práctica consta de cinco pasos: formular la pregunta, realizar una búsqueda eficiente de la literatura, evaluar críticamente la literatura, aplicarla a los resultados teniendo en cuenta nuestra experiencia y los valores del paciente y evaluar los resultados obtenidos dentro de nuestra práctica. En Radiodiagnóstico se está incrementando el número de recursos disponibles de RBE, encontrando actualmente libros, artículos, páginas web, así como potenciando actividades en congresos de nuestra especialidad. Los principios de la RBE ayudarán a promover el uso apropiado de los recursos, aportando enormes beneficios a pacientes (disminuye el uso de las exploraciones que utilizan radiaciones ionizantes), profesionales (menos sobrecarga) y gestores (uso más eficiente de recursos).

Palabras clave:
Medicina basada en la evidencia
Radiología basada en la evidencia
Diagnóstico por imagen
Criterios ACR
ALARA

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