ABSTRACT
RESUMEN Los estudios radiológicos son fundamentales en el diagnóstico y tratamiento de diversas patologías. Su calidad depende de múltiples variables, entre las que destacan, los parámetros de adquisición, interpretación, entre otros. Se propone una metodología estandarizada, sencilla, de fácil interpretación, permitiendo la evaluación regular de la calidad de las imágenes, dando indicios de la propiedad del trabajo en el centro de salud y poder realizar comparaciones entre centros y autores, a partir de los criterios anatómicos establecidos por la Unión Europea, definiendo el parámetro de calidad de la imagen (CI), representadas en una escala de Likert para el análisis de frecuencia, demostrando que puede ser una herramienta de utilidad para la evaluación reiterada de los centros de radiología. Evaluando 140 proyecciones postero anterior y 85 laterales de tórax, con una muestra de 225 estudios, realizados en un centro de salud, ubicado en la ciudad de Mérida, República Bolivariana de Venezuela, escogiendo estas proyecciones, ya que, representan el 32% de los estudios de radiología convencional. Permitiendo la comparación entre proyecciones y autores, obteniéndose para la proyección postero anterior un CI de 5,07 ± 1,53 criterios de los ocho establecidos, normalizado un CI de 0,62 ± 0,19; las imágenes excelentes solo representan el 22,78%. Comparado con un CI de 4,91 ± 1,17 criterios de los seis establecidos, normalizado un CI de 0,82 ± 0,19, e imágenes excelentes en un 64,71% para la proyección lateral. Se observa las notorias diferencias entre la calidad de las imágenes clínicas en hombres y mujeres para ambas proyecciones
ABSTRACT Radiological studies are essential in the diagnosis and treatment of various pathologies. Their quality depends on multiple variables, among which the acquisition and interpretation parameters, among others, stand out. A standardized methodology is proposed, simple, of easy interpretation, allowing the regular evaluation of the quality of the images, giving indications of the property of the work in the health center and being able to make comparisons between centers and authors, from the anatomical criteria established by the European Union, defining the parameter of image quality (IQ), represented on a Likert scale for frequency analysis, demonstrating that it can be a useful tool for the repeated evaluation of radiology centers. Evaluating 140 postero anterior and 85 lateral projections of the thorax, with a sample of 225 studies, performed in a health center, located in the city of Merida, Bolivarian Republic of Venezuela, taking these projections, since they represent 32% of the conventional radiology studies. Allowing the comparison between projections and authors, obtaining for the postero anterior projection an IQ of 5.07 ± 1.53 criteria of the eight established, normalized an IQ of 0.62 ± 0.19; the excellent images only represent 22.78%. Compared with an IQ of 4.91 ± 1.17 criteria of the six established, normalized IQ of 0.82 ± 0.19, and excellent images in 64.71% for the lateral projection. It is observed the notorious differences between the quality of clinical images in men and women for both projections
Subject(s)
Humans , Male , Female , Radiation Dosage , Radiography, Thoracic/methods , Radiographic Image Enhancement/methods , VenezuelaABSTRACT
With high morbidity, branch retinal vein occlusion (BRVO) is a common retinal vascular disease in the clinic. Although the classic characteristics of BRVO have been recognized for a long time, the traditional understanding of BRVO has been challenged along with development and application of new imaging technologies, including the reasonable classification and staging of the disease, and the vascular characteristics at the occlusive site via multimodal imaging, etc. Thus, re-summarizing and refining these features as well as further improving and optimizing traditional imaging evaluation, can not only deepen the correct acknowledge of the entity, but also find biomarkers of prognosis of visual function, which is helpful to establish better diagnosis and treatment strategy. In the meanwhile, it is necessary that clinical characteristics of BRVO on imaging and the reliability of these imaging techniques are worth correct understanding and objective assessment.
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Objective To evaluate the value of multiparametric MRI for prediction of prostate cancer pathology and tumor staging. Methods A total of 80 patients with prostate cancer admitted during the period from 2016 to 2021 were enrolled as the study subjects, and all patients underwent multiparametric MRI. The pathological examination of radical prostatectomy specimens was used as a gold standard to evaluate the predictive value of multiparametric MRI for significant prostate cancaer, extracapsular extension, index lesion location and lymph node metastasis. Results Multiparametric MRI showed a sensitive of 96%, specificity of 60%, positive predictive value of 97.3% and negative predictive value of 50% for prediction of significant prostate cancer, and the concordance between multiparametric MRI and pathology of radical prostatectomy specimens was 75% for prediction of index lesions. In addition, multiparametric MRI showed a 40% sensitivity, 91.4% specificity, 85.7% positive predictive value and 54.2% negative predictive value for identification of extracapsular extension and a 16.7% accuracy for detection of lymph node metastasis. Conclusion Multiparametric MRI is highly sensitive for predicting significant prostate cancer with a high positive predictive value and is highly accurate for identification of index lesions of prostate cancer, which is of great value to propose prostate cancer treatment schemes and evaluate the clinical prognosis among prostate cancer patients.
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Justification in the field of radiology refers to the appropriate use of radiologic imaging modalities, and may be achieved by establishing clinical imaging guidelines (CIGs). Recently, CIGs have been shown to be useful in selecting the proper medical imaging modality, resulting in the reduction of inappropriate radiologic examinations, thereby enhancing justifications. However, the development of CIGs is both time-consuming and difficult as the methodology of evidence-based medicine should be adhered to. Thus, although the radiologic societies in developed countries such as the United Kingdom and USA are already developing and implementing CIGs in their clinical practices, CIGs are not yet readily available in many other countries owing to differences in medical circumstances and resources. In this review, we assess the role and limitations of CIGs by examining the current status of CIGs in developed countries, and also describe the specific efforts made to establish CIGs in Korea.