摘要目的 探讨胃肠超声造影诊断肠系膜上动脉压迫综合征(SMAS)的价值.方法 经螺旋CT检查证实的SMAS患者29例,全部进行口服胃窗超声造影检查,分析SMAS的经口服胃窗的超声造影表现.结果 29例患儿胃肠超声造影均可显示明显减少的肠系膜上动脉(SMA)-腹主动脉角度和SMA-腹主动脉距离,仰卧位患儿出现由SMA引起的十二指肠压迹和"漏斗形"、"葫芦形"图像,可见十二指肠近端扩张和造影剂来回流动.经口胃肠超声造影检查和CT检查诊断SMAS具有高度的一致性.结论 胃肠超声造影检测SMAS具有特征性表现,并对筛选可疑的SMAS病例有一定作用.

abstractsObjective To explore oral contrast-enhanced ultrasonography findings in superior mesenteric artery syndrome (SMAS).Methods Twenty-nine patients with SMAS were examined using oral contrast-enhanced ultrasonography,which was confirmed by contrast-enhanced spiral computerized tomography.Results Abdominal ultrasonography with oral contrast-enhanced ultrasonography revealed a significant reduction of the SMA angle and diminished SMA-aorta distance in 29 subjects.Duodenum was showed the indentation and "funnel shaped" or "dumbbell shaped" findings which was caused by pressure of the SMA in patients with recumbent position.The proximal part of duodenum expanded distinctively with contrast media movement fro.Ultrasonography and CT examinations had a good agreement in diagnosing pathological aortomesenteric angle and distance.Conclusions Oral contrast-enhanced ultrasonography presents characteristic findings in patients with SMAS,which is useful in epidemiological screening of suspicious cases of SMAS in children.