Department of Radiology, Comer Children's Hospital, The University of Chicago, MC 2026, Chicago, IL 60637, USA.
Pediatr Radiol. 2010 Sep;40(9):1476-84. doi: 10.1007/s00247-010-1709-4. Epub 2010 Jun 16.
US can be used to assess bowel and does not require ionizing radiation or the administration of contrast material. Prior studies of the duodenum with US are limited.
This study assesses the success rate of US demonstration of the third portion of the duodenum (D3) between the superior mesenteric artery (SMA) and the aorta in newborns to exclude malrotation based on embryologic and anatomic principles.
Thirty-three newborns underwent US studies. The structures between the SMA and the aorta, including D3, were evaluated in axial and longitudinal planes. The length of time to acquire diagnostic images was recorded.
In both the axial and longitudinal planes, D3 was seen between the SMA and the aorta in all 33 infants, including some with abundant bowel gas. The mean length of time to acquire diagnostic images was 34 s.
Bedside US successfully illustrated the retromesenteric position of D3 in all 33 infants. Overlying gas-filled bowel was effectively effaced by graded compression. The short study duration indicates the practicality of the method. Further studies in broader patient populations and in correlation with other imaging and/or surgical findings is required to validate our technique.
US 可用于评估肠道，且无需电离辐射或造影剂。先前关于 US 检查十二指肠的研究有限。
本研究基于胚胎学和解剖学原理，评估 US 检查新生儿肠系膜上动脉（SMA）与主动脉之间的十二指肠第三部分（D3）以排除旋转不良的成功率。
33 例新生儿进行了 US 检查。评估 SMA 和主动脉之间的结构，包括 D3，在轴位和纵切面进行。记录获得诊断图像的时间。
在轴向和纵向平面上，33 例婴儿的 SMA 和主动脉之间均可见 D3，包括一些肠气丰富的婴儿。获得诊断图像的平均时间为 34 秒。
床边 US 成功地显示了 33 例婴儿的 D3 系膜后位置。通过分级压迫有效地消除了覆盖的充满气体的肠管。较短的研究时间表明该方法具有实用性。需要进一步在更广泛的患者人群中进行研究，并与其他影像学和/或手术发现相关联，以验证我们的技术。
