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[目的]探讨上消化道造影(upper gastrointestinal imaging,UGI)常规检查十二指肠空肠曲(duodenojejunal flexure,DJF)位置的意义。[方法]回顾性分析350例行UGI患儿的影像学资料,56例临床怀疑肠旋转不良的患儿,其余患儿根据是否检查DJF位置分为2组:A组198例检查了DJF位置,B组96例未检查DJF位置。记录患儿的年龄、性别、UGI的检查时间和DJF位置。[结果]56例临床怀疑肠旋转不良的患儿有24例有DJF位置的异常(42.8%),A组198例患儿仅有1例发现DJF位置异常(0.5%)。B组患儿的年龄和性别与A组比较差异无统计学意义(P>0.05)。2组患儿UGI的检查时间比较差异有统计学意义(P<0.01)。A组的检查时间显著大于B组。[结论]本研究发现对临床没有怀疑肠旋转不良的患儿,UGI发现DJF位置异常的概率非常小,故儿童UGI可不常规检查DJF位置以降低辐射剂量。
[Objective] To investigate the significance of upper gastrointestinal imaging (UGI) routinely examining the location of duodenojejunal flexure (DJF). [Methods] The imaging data of 350 children with UGI were retrospectively analyzed. 56 children with clinically suspected intestinal malrotation were enrolled. The other children were divided into 2 groups according to whether they were examined for DJF position: 198 patients in group A examined DJF position, 96 cases in group B did not check the position of DJF. Record the children’s age, gender, UGI examination time and DJF position. [Results] Twenty-four of the 56 clinically suspected cases of bowel dysplasia had an abnormality of DJF (42.8%), while only 1 of 198 children in group A found an abnormal DJF (0.5%). There was no significant difference in age and sex between group B and group A (P> 0.05). There was significant difference in the examination time of UGI between two groups (P <0.01). Group A examination time was significantly greater than the B group. [Conclusion] This study found that children with clinically undiagnosed bowel dysplasia, UGI found that the probability of abnormal DJF position is very small, so children can not routinely check the DJI DJI position to reduce radiation dose.