Application research of MR diffusion tensor imaging in diagnosis traumatic axonal injury / 中国医师杂志

Objective To explore the value of MR diffusion tensor imaging ( DTI) in diagnosis of traumatic Axonal injury ( TAI) .Methods Twenty nine patients with traumatic brain injury ( TBI) and matched 22 control subjects were performed with DTI . Fractional anisotropy ( FA) was calculated from semioval center , corpus callosum , internal capsule and pons of controls and TBI pa-tients.According to Glasgow Score (GCS), TBI patients were divided into mild group (GCS≥13) and moderate-severe group (GCS≤12), each group compared with control group in FA value .The correlation between FA values in different regions and GCS score were analyzed in DTI group .Results FA value of semioval center was decreased in mild DTI group ( P <0.01 ) .FA values of semio-val center , corpus callosum , and internal capsule were decreased in moderate-severe DTI group ( P <0.05 ) .The FA values in semio-val center , corpus callosum , and internal capsule were positively correlated with GCS score in TBI group ( P <0.05 ) .Conclusions DTI is sensitive to detect the traumatic axonal injury??Changes of FA value in ROIs can access the severity of axonal injury ?? which ishelpful for diagnosis earlier and improving prognosis.

A influência das condições de visibilização na análise de radiografias de pacientes vítimas de trauma de extremidade / The impact of visualization conditions on the analysis of radiographies of extremity fracture patients

Para que o tratamento de uma fratura de extremidade seja instituído, é fundamental que se faça minucioso exame físico, complementado pela radiografia. No entanto, não raramente, a análise radiográfica é feita confrontando-se o filme com a luz da janela ou da sala de emergência, e não com o negatoscópio. O presente estudo tem como objetivo observar se as condições da visibilização realmente influenciam na análise radiográfica de pacientes vítimas de trauma de extremidade.

Before prescribing a treatment, physicians are supposed to carry on detailed physical exams complemented with radiography analysis. However, they frequently analyze radiographies against the light shining from the window or in the emergency room, instead of using a negatoscope. This study aims at investigating whether visualization conditions do have an impact on the analysis of radiographies of extremity fracture patients.