RESUMO
A method for the quantification of the size of liver metastases based on stereologic principles is presented. This evaluation procedure was applied retrospectively to routine computerized tomography (CT) scans of the liver and allowed reliable estimation of the volume of liver metastases. Furthermore, the data were used to create three-dimensional (3D) representations of the examined organ by computer reconstruction.
Assuntos
Carcinoma/diagnóstico por imagem , Carcinoma/secundário , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/secundário , Tomografia Computadorizada por Raios X , Adulto , Carcinoma/patologia , Neoplasias do Colo/patologia , Gráficos por Computador , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Fígado/diagnóstico por imagem , Fígado/patologia , Neoplasias Hepáticas/patologia , Fotogrametria , Projetos Piloto , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodosRESUMO
The accuracy of ultrasonography in the diagnosis of different pathological renal conditions is evaluated. Correlations were established to the findings on intravenous urography and selective angiography. Ultrasonography is suitable for the determination of the exact size and site of the kidney and, therefore, should be used routinely in the follow-up of renal transplant recipients. The ability to differentiate between solid and cystic lesions is of partcular value. Moreover, perirenal changes are easily recognizable. The limits of B-mode sonography lie in the interpretation of central expanding lesions with a diameter of under 3 cm. This non-invasive method should be used selectively in the diagnosis of renal disease, whereas angiography should be limited to the classification of equivocal ultrasound findings and in the case of solid tumours.
