Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.17/1254
Título: Focal Malignant Liver Lesions: Diagnosis by Dynamic Incremental CT, Early Phase
Autor: Marques, RM
Mendonça, P
Cordeiro, A
Monteiro, T
Vilela, J
Almeida, F
Palavras-chave: Angiomatose
Intervalos de Confiança
Meios de Contraste
Diagnóstico Diferencial
Estudos de Follow-Up
Injecções Intravenosas
Doenças do Fígado
Neoplasias Hepáticas
Estudos Prospectivos
Curva ROC
Intensificação de Imagem Radiográfica
Sensibilidade e Especificidade
Tomografia Computorizada
Data: 1996
Editora: Springer-Verlag
Citação: Eur Radiol. 1996;6(4):433-8
Resumo: The purpose of our study was to evaluate the accuracy of dynamic incremental bolus-enhanced conventional CT (DICT) with intravenous contrast administration, early phase, in the diagnosis of malignancy of focal liver lesions. A total of 122 lesions were selected in 74 patients considering the following criteria: lesion diameter 10 mm or more, number of lesions less than six per study, except in multiple angiomatosis and the existence of a valid criteria of definitive diagnosis. Lesions were categorized into seven levels of diagnostic confidence of malignancy compared with the definitive diagnosis for acquisition of a receiver-operator-characteristic (ROC) curve analysis and to determine the sensitivity and specificity of the technique. Forty-six and 70 lesions were correctly diagnosed as malignant and benign, respectively; there were 2 false-positive and 4 false-negative diagnoses of malignancy and the sensitivity and specificity obtained were 92 and 97%. The DICT early phase was confirmed as a highly accurate method in the characterization and diagnosis of malignancy of focal liver lesions, requiring an optimal technical performance and judicious analysis of existing semiological data.
Peer review: yes
URI: http://hdl.handle.net/10400.17/1254
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