Zerin J M, DiPietro M A
Department of Radiology, University of Michigan Hospitals, Ann Arbor 48109-0252.
Radiology. 1992 Jun;183(3):693-4. doi: 10.1148/radiology.183.3.1584922.
The purpose of this study was to determine the frequency with which inversion of the superior mesenteric artery (SMA) and superior mesenteric vein (SMV) is seen at ultrasound (US) in children with malrotation. Nine patients with malrotation at upper gastrointestinal (UGI) radiographic examination (surgically confirmed) were studied prospectively. Anatomic relationships between the SMA and SMV were evaluated with real-time US in an axial projection, with the transducer placed at the midline of the anterior abdomen. Use of duplex imaging confirmed which vessel was the artery and which was the vein. Vessels were considered to be inverted if the SMV was left of the left lateral margin of the SMA. The SMA and SMV were inverted in six patients (67%) and were normal in three (33%). One patient with normal mesenteric vessels had midgut volvulus; duodenojejunal resection was required. Inversion of the SMA and SMV at US is not sufficiently sensitive to screen patients for malrotation. UGI examination remains the standard modality to diagnose this disorder.
本研究的目的是确定在超声（US）检查中，旋转不良患儿肠系膜上动脉（SMA）和肠系膜上静脉（SMV）发生反转的频率。对9例经上消化道（UGI）造影检查（手术证实）为旋转不良的患儿进行了前瞻性研究。采用实时超声在轴位投照下评估SMA和SMV之间的解剖关系，将探头置于前腹壁中线处。使用双功成像确定哪条血管是动脉，哪条是静脉。如果SMV位于SMA左侧缘的左侧，则认为血管发生了反转。6例患者（67%）的SMA和SMV发生了反转，3例（33%）正常。1例肠系膜血管正常的患者发生了中肠扭转；需要进行十二指肠空肠切除术。超声检查时SMA和SMV的反转对筛查旋转不良患者的敏感性不足。UGI检查仍然是诊断这种疾病的标准方法。
