RESUMO
A retrospective study of 624 lumbar myelographic and CT myelographic procedures was undertaken to evaluate the frequency, radiographic and clinical relevance of contrast medium outside the dural sac. Our findings indicate that epidural contrast is frequently identified on CT scans with highly sensitive window settings (in 35.4% of all CT myelographic studies). Standard myelographic films are less sensitive for the detection of epidural contrast (9.6%). Subdural contrast is far less often encountered (in 2.4% of CT myelographic studies and in 3.2% of standard myelographic films). We believe leakage of contrast to occur through the puncture site into the epidural and subdural space.
Assuntos
Líquido Cefalorraquidiano , Extravasamento de Materiais Terapêuticos e Diagnósticos/diagnóstico por imagem , Mielografia , Tomografia Computadorizada por Raios X , Adulto , Espaço Epidural/diagnóstico por imagem , Extravasamento de Materiais Terapêuticos e Diagnósticos/epidemiologia , Feminino , Humanos , Iohexol , Masculino , Estudos Retrospectivos , Punção Espinal , Espaço Subdural/diagnóstico por imagemRESUMO
Despite the increasing importance of MR imaging, CT investigation remains a very useful and frequently applied method in the study of ankle pathology. In a short pictorial essay, the contribution of this technique to the diagnosis of soft tissue pathology of the ankle is discussed and illustrated.
