婴儿痉挛颅脑磁共振成像的病因诊断价值探讨

目的探讨磁共振成像(MRI)对婴儿痉挛症病因诊断的临床应用价值.方法应用以色列ELSINTGEREXMR仪2.0-T,对31例West综合征头颅MRI进行回顾性分析;观察其髓鞘形成的进程,测量脑室大小和脑外间隙的宽度,探讨West综合征的影像学特征.结果31例患儿中症状性West综合征25例(80.6%),隐源性3例(9.7%),原发性3例(9.7%).MRI表现主要有4种侧脑室周围白质软化灶(又分为伴脑白质髓鞘化延迟和不伴髓鞘化延迟);脑白质髓鞘化延迟;其它异常者如脑室扩大合并脑外间隙增宽、单纯脑外间隙增宽、单侧脑室扩大、脑组织软化灶;无异常发现者.10例白质髓鞘化延迟者,9例有围产期异常史.结论MRI检查有助于寻找West综合征的病因,指导治疗,评估预后.

Etiological diagnostic value of magnetic resonance imaging in West syndrome

Objective To study the diagnostic value of magnetic resonance Ianging(MRI) in West syndrome(WS).Methods MRI studies of thirty-one patients with WS were reviewed retrospectively. Results Twen ty-five patients were diagnosed symptomatic WS, three patients were cryptogenic and three patients were essential. Thirty-one patients were classified into four groups on the basis of their MRI findings: Periventricular leukomalacia, delayed myelination, the other groups and normal. Conclusion MRI is useful in finding etiology ,helping treatment and assessing prognosis of some WS. yses the sui table particle size to be fed to achieve high-grade concentrate. According to t h e work carried out the author suggested the ideal cost effective flotation f low sheet for improved results at Bogala Mines in Sri Lanka. Key words: graphite; flotation process; reagent; carbon percentage